Check PLATFORM for proper toolchain when use msvc
Check PLATFORM for proper toolchain when use msvc

szeged/servo,ConnorGBrewster/servo,emilio/servo,pyfisch/servo,peterjoel/servo,notriddle/servo,nnethercote/servo,cbrewster/servo,splav/servo,notriddle/servo,CJ8664/servo,jimberlage/servo,anthgur/servo,thiagopnts/servo,peterjoel/servo,dsandeephegde/servo,fiji-flo/servo,avadacatavra/servo,dati91/servo,larsbergstrom/servo,jimberlage/servo,upsuper/servo,DominoTree/servo,dsandeephegde/servo,pyfisch/servo,fiji-flo/servo,dati91/servo,rnestler/servo,cbrewster/servo,larsbergstrom/servo,dati91/servo,DominoTree/servo,splav/servo,mattnenterprise/servo,anthgur/servo,cbrewster/servo,saneyuki/servo,anthgur/servo,mbrubeck/servo,dati91/servo,saneyuki/servo,mbrubeck/servo,dati91/servo,cbrewster/servo,ConnorGBrewster/servo,szeged/servo,upsuper/servo,peterjoel/servo,notriddle/servo,avadacatavra/servo,nnethercote/servo,jimberlage/servo,emilio/servo,jimberlage/servo,sadmansk/servo,SimonSapin/servo,larsbergstrom/servo,CJ8664/servo,thiagopnts/servo,nnethercote/servo,SimonSapin/servo,notriddle/servo,mattnenterprise/servo,paulrouget/servo,paulrouget/servo,nnethercote/servo,upsuper/servo,mattnenterprise/servo,SimonSapin/servo,larsbergstrom/servo,DominoTree/servo,avadacatavra/servo,eddyb/servo,ConnorGBrewster/servo,avadacatavra/servo,CJ8664/servo,KiChjang/servo,splav/servo,KiChjang/servo,cbrewster/servo,avadacatavra/servo,notriddle/servo,thiagopnts/servo,mbrubeck/servo,szeged/servo,cbrewster/servo,fiji-flo/servo,eddyb/servo,rnestler/servo,szeged/servo,sadmansk/servo,mbrubeck/servo,pyfisch/servo,pyfisch/servo,upsuper/servo,larsbergstrom/servo,dsandeephegde/servo,paulrouget/servo,DominoTree/servo,SimonSapin/servo,dati91/servo,rnestler/servo,canaltinova/servo,sadmansk/servo,KiChjang/servo,splav/servo,peterjoel/servo,splav/servo,paulrouget/servo,larsbergstrom/servo,avadacatavra/servo,emilio/servo,DominoTree/servo,rnestler/servo,szeged/servo,nnethercote/servo,KiChjang/servo,jimberlage/servo,sadmansk/servo,ConnorGBrewster/servo,rnestler/servo,anthgur/servo,canaltinova/servo,paulrouget/servo,emilio/servo,mbrubeck/servo,thiagopnts/servo,CJ8664/servo,dati91/servo,larsbergstrom/servo,upsuper/servo,sadmansk/servo,eddyb/servo,fiji-flo/servo,dati91/servo,rnestler/servo,pyfisch/servo,canaltinova/servo,anthgur/servo,fiji-flo/servo,saneyuki/servo,splav/servo,jimberlage/servo,canaltinova/servo,emilio/servo,peterjoel/servo,szeged/servo,szeged/servo,emilio/servo,upsuper/servo,saneyuki/servo,DominoTree/servo,rnestler/servo,KiChjang/servo,emilio/servo,dsandeephegde/servo,fiji-flo/servo,mattnenterprise/servo,DominoTree/servo,DominoTree/servo,peterjoel/servo,fiji-flo/servo,peterjoel/servo,jimberlage/servo,jimberlage/servo,eddyb/servo,SimonSapin/servo,dsandeephegde/servo,canaltinova/servo,nnethercote/servo,mbrubeck/servo,SimonSapin/servo,CJ8664/servo,saneyuki/servo,mattnenterprise/servo,anthgur/servo,szeged/servo,paulrouget/servo,KiChjang/servo,eddyb/servo,DominoTree/servo,larsbergstrom/servo,ConnorGBrewster/servo,szeged/servo,ConnorGBrewster/servo,larsbergstrom/servo,dsandeephegde/servo,sadmansk/servo,eddyb/servo,mbrubeck/servo,KiChjang/servo,SimonSapin/servo,anthgur/servo,pyfisch/servo,paulrouget/servo,emilio/servo,thiagopnts/servo,nnethercote/servo,anthgur/servo,saneyuki/servo,saneyuki/servo,peterjoel/servo,rnestler/servo,CJ8664/servo,notriddle/servo,canaltinova/servo,notriddle/servo,ConnorGBrewster/servo,paulrouget/servo,saneyuki/servo,ConnorGBrewster/servo,szeged/servo,upsuper/servo,avadacatavra/servo,notriddle/servo,mattnenterprise/servo,KiChjang/servo,splav/servo,emilio/servo,paulrouget/servo,avadacatavra/servo,pyfisch/servo,notriddle/servo,nnethercote/servo,peterjoel/servo,DominoTree/servo,notriddle/servo,CJ8664/servo,sadmansk/servo,cbrewster/servo,SimonSapin/servo,KiChjang/servo,fiji-flo/servo,thiagopnts/servo,emilio/servo,CJ8664/servo,dsandeephegde/servo,paulrouget/servo,saneyuki/servo,saneyuki/servo,mattnenterprise/servo,splav/servo,pyfisch/servo,mattnenterprise/servo,canaltinova/servo,thiagopnts/servo,pyfisch/servo,larsbergstrom/servo,nnethercote/servo,canaltinova/servo,splav/servo,nnethercote/servo,mbrubeck/servo,splav/servo,thiagopnts/servo,sadmansk/servo,KiChjang/servo,eddyb/servo,eddyb/servo,pyfisch/servo,dsandeephegde/servo,peterjoel/servo,cbrewster/servo,jimberlage/servo,upsuper/servo