Add note about refactor portability header
Add note about refactor portability header

pszemus/grpc,donnadionne/grpc,grpc/grpc,bogdandrutu/grpc,soltanmm-google/grpc,greasypizza/grpc,donnadionne/grpc,firebase/grpc,pmarks-net/grpc,vsco/grpc,msmania/grpc,ananthonline/grpc,philcleveland/grpc,PeterFaiman/ruby-grpc-minimal,apolcyn/grpc,thinkerou/grpc,a11r/grpc,fuchsia-mirror/third_party-grpc,baylabs/grpc,matt-kwong/grpc,tengyifei/grpc,vjpai/grpc,ctiller/grpc,dklempner/grpc,vjpai/grpc,ipylypiv/grpc,murgatroid99/grpc,7anner/grpc,geffzhang/grpc,firebase/grpc,LuminateWireless/grpc,ejona86/grpc,grpc/grpc,arkmaxim/grpc,soltanmm/grpc,bogdandrutu/grpc,greasypizza/grpc,donnadionne/grpc,nicolasnoble/grpc,muxi/grpc,a11r/grpc,goldenbull/grpc,nicolasnoble/grpc,ncteisen/grpc,deepaklukose/grpc,pszemus/grpc,chrisdunelm/grpc,jcanizales/grpc,donnadionne/grpc,carl-mastrangelo/grpc,vjpai/grpc,dgquintas/grpc,a-veitch/grpc,hstefan/grpc,ejona86/grpc,ppietrasa/grpc,muxi/grpc,Vizerai/grpc,ejona86/grpc,a11r/grpc,kumaralokgithub/grpc,soltanmm/grpc,Crevil/grpc,andrewpollock/grpc,malexzx/grpc,grani/grpc,mehrdada/grpc,geffzhang/grpc,muxi/grpc,wcevans/grpc,chrisdunelm/grpc,philcleveland/grpc,adelez/grpc,miselin/grpc,andrewpollock/grpc,muxi/grpc,adelez/grpc,jtattermusch/grpc,yongni/grpc,deepaklukose/grpc,sreecha/grpc,perumaalgoog/grpc,jcanizales/grpc,rjshade/grpc,ncteisen/grpc,greasypizza/grpc,mehrdada/grpc,firebase/grpc,stanley-cheung/grpc,ncteisen/grpc,firebase/grpc,yongni/grpc,daniel-j-born/grpc,matt-kwong/grpc,y-zeng/grpc,pszemus/grpc,infinit/grpc,Crevil/grpc,leifurhauks/grpc,vsco/grpc,stanley-cheung/grpc,andrewpollock/grpc,muxi/grpc,kpayson64/grpc,hstefan/grpc,Vizerai/grpc,a11r/grpc,kpayson64/grpc,jboeuf/grpc,royalharsh/grpc,sreecha/grpc,grpc/grpc,apolcyn/grpc,muxi/grpc,sreecha/grpc,tengyifei/grpc,thinkerou/grpc,adelez/grpc,perumaalgoog/grpc,leifurhauks/grpc,rjshade/grpc,zhimingxie/grpc,bogdandrutu/grpc,sreecha/grpc,leifurhauks/grpc,thunderboltsid/grpc,quizlet/grpc,jtattermusch/grpc,Crevil/grpc,pszemus/grpc,malexzx/grpc,stanley-cheung/grpc,apolcyn/grpc,kumaralokgithub/grpc,philcleveland/grpc,ncteisen/grpc,royalharsh/grpc,dgquintas/grpc,jboeuf/grpc,thinkerou/grpc,arkmaxim/grpc,nicolasnoble/grpc,soltanmm-google/grpc,murgatroid99/grpc,ejona86/grpc,jboeuf/grpc,geffzhang/grpc,deepaklukose/grpc,ctiller/grpc,VcamX/grpc,Crevil/grpc,soltanmm/grpc,sreecha/grpc,jtattermusch/grpc,mehrdada/grpc,vjpai/grpc,andrewpollock/grpc,VcamX/grpc,daniel-j-born/grpc,kriswuollett/grpc,carl-mastrangelo/grpc,podsvirov/grpc,msmania/grpc,LuminateWireless/grpc,mehrdada/grpc,PeterFaiman/ruby-grpc-minimal,pszemus/grpc,stanley-cheung/grpc,podsvirov/grpc,kriswuollett/grpc,ppietrasa/grpc,philcleveland/grpc,rjshade/grpc,MakMukhi/grpc,baylabs/grpc,nicolasnoble/grpc,a-veitch/grpc,Vizerai/grpc,ppietrasa/grpc,yang-g/grpc,makdharma/grpc,soltanmm/grpc,malexzx/grpc,malexzx/grpc,royalharsh/grpc,a-veitch/grpc,grpc/grpc,kumaralokgithub/grpc,matt-kwong/grpc,donnadionne/grpc,stanley-cheung/grpc,MakMukhi/grpc,Crevil/grpc,ananthonline/grpc,wcevans/grpc,pmarks-net/grpc,nicolasnoble/grpc,podsvirov/grpc,Vizerai/grpc,simonkuang/grpc,Vizerai/grpc,nicolasnoble/grpc,perumaalgoog/grpc,a11r/grpc,geffzhang/grpc,makdharma/grpc,dgquintas/grpc,ananthonline/grpc,royalharsh/grpc,ananthonline/grpc,rjshade/grpc,royalharsh/grpc,arkmaxim/grpc,MakMukhi/grpc,murgatroid99/grpc,yongni/grpc,jboeuf/grpc,soltanmm/grpc,ejona86/grpc,carl-mastrangelo/grpc,MakMukhi/grpc,PeterFaiman/ruby-grpc-minimal,perumaalgoog/grpc,chrisdunelm/grpc,greasypizza/grpc,arkmaxim/grpc,miselin/grpc,ctiller/grpc,firebase/grpc,grpc/grpc,ncteisen/grpc,simonkuang/grpc,zhimingxie/grpc,quizlet/grpc,leifurhauks/grpc,vsco/grpc,thunderboltsid/grpc,yongni/grpc,thunderboltsid/grpc,LuminateWireless/grpc,a-veitch/grpc,Crevil/grpc,ppietrasa/grpc,kpayson64/grpc,grani/grpc,grani/grpc,yugui/grpc,philcleveland/grpc,matt-kwong/grpc,carl-mastrangelo/grpc,leifurhauks/grpc,miselin/grpc,ncteisen/grpc,jboeuf/grpc,dgquintas/grpc,jcanizales/grpc,adelez/grpc,leifurhauks/grpc,daniel-j-born/grpc,thinkerou/grpc,firebase/grpc,jtattermusch/grpc,dklempner/grpc,wcevans/grpc,yugui/grpc,vjpai/grpc,ncteisen/grpc,apolcyn/grpc,ncteisen/grpc,vjpai/grpc,donnadionne/grpc,quizlet/grpc,kpayson64/grpc,yugui/grpc,makdharma/grpc,hstefan/grpc,yang-g/grpc,nicolasnoble/grpc,vsco/grpc,7anner/grpc,makdharma/grpc,stanley-cheung/grpc,vjpai/grpc,royalharsh/grpc,goldenbull/grpc,chrisdunelm/grpc,infinit/grpc,malexzx/grpc,7anner/grpc,grani/grpc,grani/grpc,rjshade/grpc,Vizerai/grpc,dklempner/grpc,goldenbull/grpc,quizlet/grpc,yang-g/grpc,wcevans/grpc,pmarks-net/grpc,kpayson64/grpc,jtattermusch/grpc,kpayson64/grpc,thinkerou/grpc,MakMukhi/grpc,carl-mastrangelo/grpc,adelez/grpc,jcanizales/grpc,deepaklukose/grpc,hstefan/grpc,ctiller/grpc,andrewpollock/grpc,geffzhang/grpc,dklempner/grpc,pszemus/grpc,quizlet/grpc,VcamX/grpc,geffzhang/grpc,dklempner/grpc,yang-g/grpc,fuchsia-mirror/third_party-grpc,zhimingxie/grpc,donnadionne/grpc,vsco/grpc,MakMukhi/grpc,yugui/grpc,malexzx/grpc,sreecha/grpc,quizlet/grpc,chrisdunelm/grpc,ananthonline/grpc,a11r/grpc,soltanmm-google/grpc,makdharma/grpc,grani/grpc,VcamX/grpc,daniel-j-born/grpc,yongni/grpc,LuminateWireless/grpc,dgquintas/grpc,ananthonline/grpc,ipylypiv/grpc,soltanmm-google/grpc,PeterFaiman/ruby-grpc-minimal,firebase/grpc,donnadionne/grpc,yang-g/grpc,pmarks-net/grpc,msmania/grpc,baylabs/grpc,fuchsia-mirror/third_party-grpc,vsco/grpc,simonkuang/grpc,goldenbull/grpc,y-zeng/grpc,vsco/grpc,yongni/grpc,quizlet/grpc,adelez/grpc,andrewpollock/grpc,pszemus/grpc,y-zeng/grpc,thunderboltsid/grpc,soltanmm-google/grpc,jcanizales/grpc,vjpai/grpc,thinkerou/grpc,donnadionne/grpc,philcleveland/grpc,carl-mastrangelo/grpc,muxi/grpc,vjpai/grpc,muxi/grpc,tengyifei/grpc,PeterFaiman/ruby-grpc-minimal,kpayson64/grpc,muxi/grpc,geffzhang/grpc,thunderboltsid/grpc,LuminateWireless/grpc,soltanmm/grpc,royalharsh/grpc,y-zeng/grpc,hstefan/grpc,wcevans/grpc,jtattermusch/grpc,greasypizza/grpc,firebase/grpc,geffzhang/grpc,dklempner/grpc,pmarks-net/grpc,ananthonline/grpc,philcleveland/grpc,murgatroid99/grpc,PeterFaiman/ruby-grpc-minimal,infinit/grpc,donnadionne/grpc,sreecha/grpc,vjpai/grpc,perumaalgoog/grpc,ipylypiv/grpc,chrisdunelm/grpc,leifurhauks/grpc,murgatroid99/grpc,mehrdada/grpc,PeterFaiman/ruby-grpc-minimal,fuchsia-mirror/third_party-grpc,daniel-j-born/grpc,arkmaxim/grpc,kpayson64/grpc,y-zeng/grpc,goldenbull/grpc,jboeuf/grpc,thinkerou/grpc,Crevil/grpc,adelez/grpc,vjpai/grpc,simonkuang/grpc,apolcyn/grpc,stanley-cheung/grpc,makdharma/grpc,Vizerai/grpc,soltanmm-google/grpc,malexzx/grpc,mehrdada/grpc,tengyifei/grpc,adelez/grpc,kskalski/grpc,miselin/grpc,daniel-j-born/grpc,deepaklukose/grpc,grpc/grpc,yongni/grpc,mehrdada/grpc,pmarks-net/grpc,ananthonline/grpc,leifurhauks/grpc,infinit/grpc,infinit/grpc,apolcyn/grpc,Vizerai/grpc,dgquintas/grpc,VcamX/grpc,ejona86/grpc,soltanmm-google/grpc,bogdandrutu/grpc,grpc/grpc,arkmaxim/grpc,MakMukhi/grpc,VcamX/grpc,podsvirov/grpc,Crevil/grpc,ctiller/grpc,quizlet/grpc,a-veitch/grpc,donnadionne/grpc,baylabs/grpc,Vizerai/grpc,nicolasnoble/grpc,tengyifei/grpc,arkmaxim/grpc,fuchsia-mirror/third_party-grpc,carl-mastrangelo/grpc,podsvirov/grpc,msmania/grpc,grpc/grpc,yongni/grpc,pszemus/grpc,thunderboltsid/grpc,dgquintas/grpc,ipylypiv/grpc,murgatroid99/grpc,muxi/grpc,7anner/grpc,7anner/grpc,chrisdunelm/grpc,podsvirov/grpc,ppietrasa/grpc,greasypizza/grpc,kskalski/grpc,zhimingxie/grpc,soltanmm-google/grpc,goldenbull/grpc,yang-g/grpc,thinkerou/grpc,simonkuang/grpc,matt-kwong/grpc,ncteisen/grpc,a-veitch/grpc,jboeuf/grpc,murgatroid99/grpc,VcamX/grpc,VcamX/grpc,zhimingxie/grpc,vsco/grpc,kpayson64/grpc,ctiller/grpc,ctiller/grpc,matt-kwong/grpc,perumaalgoog/grpc,jtattermusch/grpc,philcleveland/grpc,sreecha/grpc,ejona86/grpc,jtattermusch/grpc,grani/grpc,pmarks-net/grpc,rjshade/grpc,jboeuf/grpc,fuchsia-mirror/third_party-grpc,firebase/grpc,pszemus/grpc,greasypizza/grpc,stanley-cheung/grpc,nicolasnoble/grpc,jboeuf/grpc,apolcyn/grpc,kumaralokgithub/grpc,philcleveland/grpc,yugui/grpc,kriswuollett/grpc,dgquintas/grpc,Vizerai/grpc,rjshade/grpc,ejona86/grpc,wcevans/grpc,ppietrasa/grpc,royalharsh/grpc,makdharma/grpc,yang-g/grpc,firebase/grpc,tengyifei/grpc,muxi/grpc,pszemus/grpc,miselin/grpc,thunderboltsid/grpc,greasypizza/grpc,fuchsia-mirror/third_party-grpc,wcevans/grpc,mehrdada/grpc,vjpai/grpc,makdharma/grpc,pmarks-net/grpc,tengyifei/grpc,ejona86/grpc,chrisdunelm/grpc,infinit/grpc,nicolasnoble/grpc,mehrdada/grpc,ananthonline/grpc,msmania/grpc,jboeuf/grpc,matt-kwong/grpc,grani/grpc,kskalski/grpc,goldenbull/grpc,jtattermusch/grpc,kumaralokgithub/grpc,msmania/grpc,goldenbull/grpc,ctiller/grpc,infinit/grpc,kpayson64/grpc,chrisdunelm/grpc,y-zeng/grpc,apolcyn/grpc,dgquintas/grpc,arkmaxim/grpc,thinkerou/grpc,carl-mastrangelo/grpc,ppietrasa/grpc,hstefan/grpc,y-zeng/grpc,dgquintas/grpc,daniel-j-born/grpc,podsvirov/grpc,wcevans/grpc,miselin/grpc,7anner/grpc,simonkuang/grpc,rjshade/grpc,deepaklukose/grpc,soltanmm/grpc,LuminateWireless/grpc,perumaalgoog/grpc,7anner/grpc,ctiller/grpc,yugui/grpc,kriswuollett/grpc,fuchsia-mirror/third_party-grpc,royalharsh/grpc,bogdandrutu/grpc,thunderboltsid/grpc,ejona86/grpc,daniel-j-born/grpc,kskalski/grpc,malexzx/grpc,greasypizza/grpc,kskalski/grpc,simonkuang/grpc,zhimingxie/grpc,bogdandrutu/grpc,stanley-cheung/grpc,ncteisen/grpc,bogdandrutu/grpc,jboeuf/grpc,hstefan/grpc,LuminateWireless/grpc,soltanmm/grpc,murgatroid99/grpc,y-zeng/grpc,grpc/grpc,zhimingxie/grpc,ncteisen/grpc,muxi/grpc,ppietrasa/grpc,apolcyn/grpc,grpc/grpc,deepaklukose/grpc,ctiller/grpc,hstefan/grpc,a11r/grpc,donnadionne/grpc,PeterFaiman/ruby-grpc-minimal,leifurhauks/grpc,sreecha/grpc,thinkerou/grpc,MakMukhi/grpc,mehrdada/grpc,wcevans/grpc,yugui/grpc,yang-g/grpc,jboeuf/grpc,kpayson64/grpc,jcanizales/grpc,ncteisen/grpc,kskalski/grpc,jtattermusch/grpc,y-zeng/grpc,matt-kwong/grpc,miselin/grpc,carl-mastrangelo/grpc,a11r/grpc,kumaralokgithub/grpc,PeterFaiman/ruby-grpc-minimal,baylabs/grpc,dklempner/grpc,carl-mastrangelo/grpc,podsvirov/grpc,jtattermusch/grpc,dgquintas/grpc,kumaralokgithub/grpc,infinit/grpc,geffzhang/grpc,tengyifei/grpc,firebase/grpc,infinit/grpc,ipylypiv/grpc,yang-g/grpc,baylabs/grpc,dklempner/grpc,baylabs/grpc,miselin/grpc,yugui/grpc,ejona86/grpc,sreecha/grpc,ctiller/grpc,7anner/grpc,pmarks-net/grpc,a-veitch/grpc,deepaklukose/grpc,ctiller/grpc,kumaralokgithub/grpc,perumaalgoog/grpc,MakMukhi/grpc,murgatroid99/grpc,thinkerou/grpc,simonkuang/grpc,carl-mastrangelo/grpc,vsco/grpc,jcanizales/grpc,andrewpollock/grpc,kriswuollett/grpc,goldenbull/grpc,ejona86/grpc,jcanizales/grpc,fuchsia-mirror/third_party-grpc,bogdandrutu/grpc,carl-mastrangelo/grpc,ipylypiv/grpc,kriswuollett/grpc,jtattermusch/grpc,chrisdunelm/grpc,quizlet/grpc,dklempner/grpc,podsvirov/grpc,daniel-j-born/grpc,firebase/grpc,andrewpollock/grpc,makdharma/grpc,bogdandrutu/grpc,sreecha/grpc,a-veitch/grpc,msmania/grpc,nicolasnoble/grpc,miselin/grpc,malexzx/grpc,VcamX/grpc,Vizerai/grpc,ipylypiv/grpc,yugui/grpc,thinkerou/grpc,kriswuollett/grpc,matt-kwong/grpc,fuchsia-mirror/third_party-grpc,msmania/grpc,kriswuollett/grpc,perumaalgoog/grpc,ppietrasa/grpc,grpc/grpc,chrisdunelm/grpc,adelez/grpc,pszemus/grpc,murgatroid99/grpc,rjshade/grpc,kskalski/grpc,a-veitch/grpc,stanley-cheung/grpc,baylabs/grpc,deepaklukose/grpc,tengyifei/grpc,jcanizales/grpc,kriswuollett/grpc,zhimingxie/grpc,sreecha/grpc,hstefan/grpc,grani/grpc,msmania/grpc,kumaralokgithub/grpc,soltanmm/grpc,LuminateWireless/grpc,zhimingxie/grpc,PeterFaiman/ruby-grpc-minimal,pszemus/grpc,nicolasnoble/grpc,ipylypiv/grpc,a11r/grpc,stanley-cheung/grpc,andrewpollock/grpc,kskalski/grpc,7anner/grpc,simonkuang/grpc,grpc/grpc,baylabs/grpc,mehrdada/grpc,yongni/grpc,arkmaxim/grpc,soltanmm-google/grpc,thunderboltsid/grpc,LuminateWireless/grpc,ipylypiv/grpc,stanley-cheung/grpc,mehrdada/grpc,Crevil/grpc,kskalski/grpc