Tweak how the build handles `support` property cleanup and ensure the `mobile` build fixes some old WebKit bugs.
Tweak how the build handles `support` property cleanup and ensure the `mobile` build fixes some old WebKit bugs.


Former-commit-id: 34c3aeb2b58cf83a5a141ffc423245922082a714
xixilive/lodash,jzning-martian/lodash,rtorr/lodash,studiowangfei/lodash,justintung/lodash,reggi/lodash,IveWong/lodash,Andrey-Pavlov/lodash,huyinghuan/lodash,PhiLhoSoft/lodash,BernhardRode/lodash,krrg/lodash,ricardohbin/lodash,felixshu/lodash,julianocomg/lodash,jshanson7/lodash,BernhardRode/lodash,hitesh97/lodash,Lottid/lodash,AndBicScadMedia/lodash,codydaig/lodash,jzning-martian/lodash,AneesMohammed/lodash,jshanson7/lodash,samuelbeek/lodash,r14r/fork_javascript_lodash,xixilive/lodash,ricardohbin/lodash,julianocomg/lodash,shwaydogg/lodash,lekoaf/lodash,gdi2290/lodash,huyinghuan/lodash,codydaig/lodash,jacwright/lodash,therebelbeta/lodash,xiwc/lodash,enng0227/lodash,andersonaguiar/lodash,xiwc/lodash,gdi2290/lodash,polarbird/lodash,krrg/lodash,rlugojr/lodash,dgoncalves1/lodash,zestia/lodash,AndBicScadMedia/lodash,developer-prosenjit/lodash,benweet/lodash,zestia/lodash,AneesMohammed/lodash,boneskull/lodash,lekkas/lodash,shwaydogg/lodash,julianocomg/lodash,andersonaguiar/lodash,studiowangfei/lodash,polarbird/lodash,dgoncalves1/lodash,therebelbeta/lodash,msmorgan/lodash,Droogans/lodash,justintung/lodash,Moykn/lodash,lekoaf/lodash,jasnell/lodash,tgriesser/lodash,neouser99/lodash,tgriesser/lodash,Droogans/lodash,zhangguangyong/lodash,gutenye/lodash,IveWong/lodash,youprofit/lodash,tquetano-r7/lodash,felixshu/lodash,ricardohbin/lodash,schnerd/lodash,lekkas/lodash,therebelbeta/lodash,lekoaf/lodash,naoina/lodash,krahman/lodash,justintung/lodash,hafeez-syed/lodash,enng0227/lodash,transGLUKator/lodash,javiosyc/lodash,transGLUKator/lodash,af7/lodash,neouser99/lodash,ror/lodash,Droogans/lodash,tquetano-r7/lodash,mshoaibraja/lodash,huyinghuan/lodash,hitesh97/lodash,msmorgan/lodash,af7/lodash,tonyonodi/lodash,lzheng571/lodash,javiosyc/lodash,zhangguangyong/lodash,ror/lodash,jacwright/lodash,leolin1229/lodash,rtorr/lodash,krahman/lodash,greyhwndz/lodash,MaxPRafferty/lodash,gutenye/lodash,codydaig/lodash,imjerrybao/lodash,tejokumar/lodash,timruffles/lodash,joshuaprior/lodash,steelsojka/lodash,Xotic750/lodash,nbellowe/lodash,chrootsu/lodash,Moykn/lodash,Moykn/lodash,phillipalexander/lodash,jzning-martian/lodash,zhangguangyong/lodash,hitesh97/lodash,lekkas/lodash,greyhwndz/lodash,AndBicScadMedia/lodash,Xotic750/lodash,benweet/lodash,r14r/fork_javascript_lodash,nsamarcos/lodash,krahman/lodash,xixilive/lodash,timruffles/lodash,polarbird/lodash,r14r/fork_javascript_lodash,lzheng571/lodash,samuelbeek/lodash,gutenye/lodash,r14r-work/fork_javascript_lodash,tgriesser/lodash,neouser99/lodash,reggi/lodash,ajefremovs/lodash,joshuaprior/lodash,mjosh954/lodash,IveWong/lodash,AneesMohammed/lodash,Jaspersoft/lodash,mshoaibraja/lodash,PhiLhoSoft/lodash,timruffles/lodash,xiwc/lodash,naoina/lodash,steelsojka/lodash,bnicart/lodash,imjerrybao/lodash,shwaydogg/lodash,Jaspersoft/lodash,chrootsu/lodash,schnerd/lodash,af7/lodash,woldie/lodash,mjosh954/lodash,zestia/lodash,nbellowe/lodash,stewx/lodash,BernhardRode/lodash,developer-prosenjit/lodash,samuelbeek/lodash,tejokumar/lodash,lzheng571/lodash,enng0227/lodash,joshuaprior/lodash,prawnsalad/lodash,andersonaguiar/lodash,tonyonodi/lodash,Lottid/lodash,Andrey-Pavlov/lodash,woldie/lodash,woldie/lodash,ajefremovs/lodash,studiowangfei/lodash,tejokumar/lodash,nbellowe/lodash,leolin1229/lodash,Xotic750/lodash,r14r-work/fork_javascript_lodash,jasnell/lodash,javiosyc/lodash,prawnsalad/lodash,leolin1229/lodash,felixshu/lodash,hafeez-syed/lodash,schnerd/lodash,prawnsalad/lodash,Lottid/lodash,stewx/lodash,r14r-work/fork_javascript_lodash,dgoncalves1/lodash,hafeez-syed/lodash,krrg/lodash,developer-prosenjit/lodash,beaugunderson/lodash,reggi/lodash,chrootsu/lodash,ajefremovs/lodash,Jaspersoft/lodash,rlugojr/lodash,MaxPRafferty/lodash,MaxPRafferty/lodash,bnicart/lodash,Andrey-Pavlov/lodash,jacwright/lodash,PhiLhoSoft/lodash,jshanson7/lodash,jasnell/lodash,naoina/lodash,imjerrybao/lodash,mshoaibraja/lodash,youprofit/lodash,phillipalexander/lodash,mjosh954/lodash,nsamarcos/lodash,beaugunderson/lodash,tquetano-r7/lodash,youprofit/lodash,bnicart/lodash,rtorr/lodash,boneskull/lodash,nsamarcos/lodash,benweet/lodash,stewx/lodash,phillipalexander/lodash,greyhwndz/lodash,transGLUKator/lodash,ror/lodash