Disable rtti for gcc.
Disable rtti for gcc.

cvtsi2sd/mbed-os,kl-cruz/mbed-os,iriark01/mbed-drivers,bentwire/mbed,mmorenobarm/mbed-os,adustm/mbed,fanghuaqi/mbed,getopenmono/mbed,bulislaw/mbed-os,karsev/mbed-os,naves-thiago/mbed-midi,fahhem/mbed-os,jpbrucker/mbed,YarivCol/mbed-os,tung7970/mbed-os-1,DanKupiniak/mbed,FranklyDev/mbed,dbestm/mbed,infinnovation/mbed-os,jrjang/mbed,c1728p9/mbed-os,jpbrucker/mbed,screamerbg/mbed,devanlai/mbed,kl-cruz/mbed-os,HeadsUpDisplayInc/mbed,geky/mbed,bulislaw/mbed-os,bremoran/mbed-drivers,netzimme/mbed-os,tung7970/mbed-os,dbestm/mbed,JasonHow44/mbed,logost/mbed,jeremybrodt/mbed,arostm/mbed-os,masaohamanaka/mbed,GustavWi/mbed,NXPmicro/mbed,Marcomissyou/mbed,maximmbed/mbed,Tiryoh/mbed,Marcomissyou/mbed,adustm/mbed,al177/mbed,Archcady/mbed-os,mmorenobarm/mbed-os,ban4jp/mbed,logost/mbed,RonEld/mbed,pradeep-gr/mbed-os5-onsemi,j-greffe/mbed-os,xcrespo/mbed,betzw/mbed-os,Shengliang/mbed,tung7970/mbed-os-1,jeremybrodt/mbed,sg-/mbed-drivers,sam-geek/mbed,pbrook/mbed,Archcady/mbed-os,monkiineko/mbed-os,Archcady/mbed-os,wodji/mbed,mbedmicro/mbed,EmuxEvans/mbed,svogl/mbed-os,jferreir/mbed,theotherjimmy/mbed,jferreir/mbed,DanKupiniak/mbed,mnlipp/mbed,struempelix/mbed,fpiot/mbed-ats,ARM-software/mbed-beetle,bentwire/mbed,NitinBhaskar/mbed,geky/mbed,tung7970/mbed-os-1,devanlai/mbed,nvlsianpu/mbed,al177/mbed,kpurusho/mbed,HeadsUpDisplayInc/mbed,Tiryoh/mbed,jamesadevine/mbed,monkiineko/mbed-os,Sweet-Peas/mbed,brstew/MBED-BUILD,ryankurte/mbed-os,fanghuaqi/mbed,nabilbendafi/mbed,NordicSemiconductor/mbed,alertby/mbed,fpiot/mbed-ats,RonEld/mbed,adamgreen/mbed,JasonHow44/mbed,pedromes/mbed,alertby/mbed,fpiot/mbed-ats,logost/mbed,Timmmm/mbed,ban4jp/mbed,masaohamanaka/mbed,screamerbg/mbed,al177/mbed,Shengliang/mbed,betzw/mbed-os,karsev/mbed-os,Tiryoh/mbed,geky/mbed,mnlipp/mbed,GustavWi/mbed,K4zuki/mbed,struempelix/mbed,nRFMesh/mbed-os,fahhem/mbed-os,rgrover/mbed,adustm/mbed,NXPmicro/mbed,geky/mbed,cvtsi2sd/mbed-os,arostm/mbed-os,pbrook/mbed,devanlai/mbed,wodji/mbed,EmuxEvans/mbed,NitinBhaskar/mbed,nvlsianpu/mbed,pi19404/mbed,mmorenobarm/mbed-os,pbrook/mbed,sam-geek/mbed,autopulated/mbed,alertby/mbed,karsev/mbed-os,andcor02/mbed-os,jferreir/mbed,jferreir/mbed,infinnovation/mbed-os,jferreir/mbed,bentwire/mbed,ARM-software/mbed-beetle,monkiineko/mbed-os,masaohamanaka/mbed,NXPmicro/mbed,ryankurte/mbed-os,struempelix/mbed,fahhem/mbed-os,dbestm/mbed,svastm/mbed,mnlipp/mbed,svogl/mbed-os,pradeep-gr/mbed-os5-onsemi,NordicSemiconductor/mbed,dbestm/mbed,nRFMesh/mbed-os,kpurusho/mbed,JasonHow44/mbed,ryankurte/mbed-os,jrjang/mbed,hwfwgrp/mbed,Willem23/mbed,wodji/mbed,brstew/MBED-BUILD,struempelix/mbed,fanghuaqi/mbed,Willem23/mbed,theotherjimmy/mbed,c1728p9/mbed-os,betzw/mbed-os,rosterloh/mbed,catiedev/mbed-os,tung7970/mbed-os,bentwire/mbed,maximmbed/mbed,CalSol/mbed,kpurusho/mbed,mmorenobarm/mbed-os,autopulated/mbed,K4zuki/mbed,K4zuki/mbed,kl-cruz/mbed-os,sam-geek/mbed,pedromes/mbed,infinnovation/mbed-os,YarivCol/mbed-os,naves-thiago/mbed-midi,mbedmicro/mbed,al177/mbed,NXPmicro/mbed,Timmmm/mbed,netzimme/mbed-os,bcostm/mbed-os,screamerbg/mbed,mbedmicro/mbed,radhika-raghavendran/mbed-os5.1-onsemi,mazimkhan/mbed-os,YarivCol/mbed-os,NitinBhaskar/mbed,Archcady/mbed-os,struempelix/mbed,catiedev/mbed-os,xcrespo/mbed,adamgreen/mbed,jpbrucker/mbed,catiedev/mbed-os,nabilbendafi/mbed,Sweet-Peas/mbed,c1728p9/mbed-os,karsev/mbed-os,svastm/mbed,hwfwgrp/mbed,fahhem/mbed-os,radhika-raghavendran/mbed-os5.1-onsemi,dbestm/mbed,JasonHow44/mbed,logost/mbed,CalSol/mbed,andreaslarssonublox/mbed,Willem23/mbed,betzw/mbed-os,tung7970/mbed-os-1,kl-cruz/mbed-os,svogl/mbed-os,j-greffe/mbed-os,andreaslarssonublox/mbed,svastm/mbed,ryankurte/mbed-os,tung7970/mbed-os,iriark01/mbed-drivers,Marcomissyou/mbed,Timmmm/mbed,Timmmm/mbed,tung7970/mbed-os,svogl/mbed-os,jpbrucker/mbed,kpurusho/mbed,fahhem/mbed-os,mmorenobarm/mbed-os,catiedev/mbed-os,nabilbendafi/mbed,ryankurte/mbed-os,CalSol/mbed,bcostm/mbed-os,Willem23/mbed,bikeNomad/mbed,radhika-raghavendran/mbed-os5.1-onsemi,arostm/mbed-os,mazimkhan/mbed-os,fpiot/mbed-ats,pedromes/mbed,andcor02/mbed-os,devanlai/mbed,brstew/MBED-BUILD,brstew/MBED-BUILD,FranklyDev/mbed,jrjang/mbed,autopulated/mbed,rosterloh/mbed,HeadsUpDisplayInc/mbed,andreaslarssonublox/mbed,j-greffe/mbed-os,maximmbed/mbed,brstew/MBED-BUILD,sam-geek/mbed,j-greffe/mbed-os,maximmbed/mbed,Tiryoh/mbed,nRFMesh/mbed-os,CalSol/mbed,naves-thiago/mbed-midi,autopulated/mbed,ban4jp/mbed,pi19404/mbed,infinnovation/mbed-os,mazimkhan/mbed-os,0xc0170/mbed-drivers,rgrover/mbed,netzimme/mbed-os,theotherjimmy/mbed,rgrover/mbed,fanghuaqi/mbed,Tiryoh/mbed,bulislaw/mbed-os,cvtsi2sd/mbed-os,YarivCol/mbed-os,ban4jp/mbed,Shengliang/mbed,bulislaw/mbed-os,arostm/mbed-os,Sweet-Peas/mbed,Timmmm/mbed,RonEld/mbed,rosterloh/mbed,catiedev/mbed-os,bcostm/mbed-os,fvincenzo/mbed-os,nvlsianpu/mbed,screamerbg/mbed,NordicSemiconductor/mbed,monkiineko/mbed-os,pi19404/mbed,bentwire/mbed,jpbrucker/mbed,brstew/MBED-BUILD,larks/mbed,sam-geek/mbed,theotherjimmy/mbed,svogl/mbed-os,fahhem/mbed-os,pradeep-gr/mbed-os5-onsemi,pradeep-gr/mbed-os5-onsemi,devanlai/mbed,Marcomissyou/mbed,jrjang/mbed,netzimme/mbed-os,karsev/mbed-os,Shengliang/mbed,arostm/mbed-os,rosterloh/mbed,K4zuki/mbed,mikaleppanen/mbed-os,mbedmicro/mbed,netzimme/mbed-os,c1728p9/mbed-os,Sweet-Peas/mbed,larks/mbed,arostm/mbed-os,screamerbg/mbed,getopenmono/mbed,jeremybrodt/mbed,GustavWi/mbed,fvincenzo/mbed-os,nvlsianpu/mbed,fvincenzo/mbed-os,c1728p9/mbed-os,kpurusho/mbed,wodji/mbed,andcor02/mbed-os,FranklyDev/mbed,xcrespo/mbed,al177/mbed,DanKupiniak/mbed,nRFMesh/mbed-os,GustavWi/mbed,svogl/mbed-os,logost/mbed,tung7970/mbed-os,pbrook/mbed,NitinBhaskar/mbed,jamesadevine/mbed,adamgreen/mbed,ryankurte/mbed-os,hwfwgrp/mbed,pedromes/mbed,GustavWi/mbed,NitinBhaskar/mbed,jrjang/mbed,kl-cruz/mbed-os,bikeNomad/mbed,nabilbendafi/mbed,maximmbed/mbed,fpiot/mbed-ats,monkiineko/mbed-os,mazimkhan/mbed-os,Sweet-Peas/mbed,bulislaw/mbed-os,radhika-raghavendran/mbed-os5.1-onsemi,getopenmono/mbed,pi19404/mbed,jrjang/mbed,sg-/mbed-drivers,cvtsi2sd/mbed-os,mnlipp/mbed,adustm/mbed,kjbracey-arm/mbed,K4zuki/mbed,Marcomissyou/mbed,FranklyDev/mbed,mikaleppanen/mbed-os,alertby/mbed,devanlai/mbed,ARM-software/mbed-beetle,bremoran/mbed-drivers,xcrespo/mbed,svastm/mbed,mikaleppanen/mbed-os,nRFMesh/mbed-os,hwfwgrp/mbed,NXPmicro/mbed,bcostm/mbed-os,karsev/mbed-os,pbrook/mbed,andcor02/mbed-os,ARM-software/mbed-beetle,fvincenzo/mbed-os,nRFMesh/mbed-os,NordicSemiconductor/mbed,kjbracey-arm/mbed,jamesadevine/mbed,nvlsianpu/mbed,theotherjimmy/mbed,radhika-raghavendran/mbed-os5.1-onsemi,pi19404/mbed,al177/mbed,nvlsianpu/mbed,JasonHow44/mbed,betzw/mbed-os,mnlipp/mbed,HeadsUpDisplayInc/mbed,adamgreen/mbed,maximmbed/mbed,infinnovation/mbed-os,ban4jp/mbed,nabilbendafi/mbed,NXPmicro/mbed,CalSol/mbed,DanKupiniak/mbed,bikeNomad/mbed,bulislaw/mbed-os,wodji/mbed,mikaleppanen/mbed-os,getopenmono/mbed,dbestm/mbed,RonEld/mbed,radhika-raghavendran/mbed-os5.1-onsemi,netzimme/mbed-os,c1728p9/mbed-os,rgrover/mbed,rosterloh/mbed,logost/mbed,larks/mbed,alertby/mbed,mikaleppanen/mbed-os,pradeep-gr/mbed-os5-onsemi,Shengliang/mbed,larks/mbed,jferreir/mbed,pradeep-gr/mbed-os5-onsemi,struempelix/mbed,infinnovation/mbed-os,adustm/mbed,rgrover/mbed,kl-cruz/mbed-os,bcostm/mbed-os,jpbrucker/mbed,adamgreen/mbed,bcostm/mbed-os,mazimkhan/mbed-os,bikeNomad/mbed,masaohamanaka/mbed,larks/mbed,hwfwgrp/mbed,hwfwgrp/mbed,fpiot/mbed-ats,Archcady/mbed-os,naves-thiago/mbed-midi,autopulated/mbed,Archcady/mbed-os,jamesadevine/mbed,jeremybrodt/mbed,masaohamanaka/mbed,masaohamanaka/mbed,naves-thiago/mbed-midi,RonEld/mbed,j-greffe/mbed-os,xcrespo/mbed,theotherjimmy/mbed,jamesadevine/mbed,HeadsUpDisplayInc/mbed,jeremybrodt/mbed,autopulated/mbed,bikeNomad/mbed,naves-thiago/mbed-midi,JasonHow44/mbed,getopenmono/mbed,RonEld/mbed,Timmmm/mbed,mmorenobarm/mbed-os,fanghuaqi/mbed,kpurusho/mbed,geky/mbed,monkiineko/mbed-os,cvtsi2sd/mbed-os,ban4jp/mbed,adamgreen/mbed,xcrespo/mbed,Tiryoh/mbed,pedromes/mbed,catiedev/mbed-os,pi19404/mbed,YarivCol/mbed-os,nabilbendafi/mbed,EmuxEvans/mbed,FranklyDev/mbed,pedromes/mbed,Willem23/mbed,tung7970/mbed-os-1,screamerbg/mbed,Shengliang/mbed,andcor02/mbed-os,EmuxEvans/mbed,cvtsi2sd/mbed-os,K4zuki/mbed,jamesadevine/mbed,mnlipp/mbed,HeadsUpDisplayInc/mbed,fvincenzo/mbed-os,EmuxEvans/mbed,betzw/mbed-os,Marcomissyou/mbed,andreaslarssonublox/mbed,EmuxEvans/mbed,getopenmono/mbed,wodji/mbed,CalSol/mbed,alertby/mbed,bentwire/mbed,Sweet-Peas/mbed,adustm/mbed,pbrook/mbed,svastm/mbed,rosterloh/mbed,mikaleppanen/mbed-os,andreaslarssonublox/mbed,mazimkhan/mbed-os,YarivCol/mbed-os,mbedmicro/mbed,0xc0170/mbed-drivers,larks/mbed,j-greffe/mbed-os,kjbracey-arm/mbed,andcor02/mbed-os,kjbracey-arm/mbed