HC bootstrapping fix: add -I$(GHC_INCLUDE_DIR) to SRC_CC_OPTS And add a comment explaining why these options are here
HC bootstrapping fix: add -I$(GHC_INCLUDE_DIR) to SRC_CC_OPTS
And add a comment explaining why these options are here

lukexi/ghc-7.8-arm64,urbanslug/ghc,sgillespie/ghc,hferreiro/replay,christiaanb/ghc,tibbe/ghc,nathyong/microghc-ghc,nomeata/ghc,AlexanderPankiv/ghc,vTurbine/ghc,sgillespie/ghc,snoyberg/ghc,oldmanmike/ghc,urbanslug/ghc,shlevy/ghc,bitemyapp/ghc,spacekitteh/smcghc,hferreiro/replay,siddhanathan/ghc,mettekou/ghc,nathyong/microghc-ghc,bitemyapp/ghc,mettekou/ghc,olsner/ghc,mcmaniac/ghc,christiaanb/ghc,fmthoma/ghc,sdiehl/ghc,tibbe/ghc,ml9951/ghc,tjakway/ghcjvm,mfine/ghc,green-haskell/ghc,hferreiro/replay,wxwxwwxxx/ghc,lukexi/ghc,olsner/ghc,oldmanmike/ghc,spacekitteh/smcghc,ezyang/ghc,gridaphobe/ghc,nathyong/microghc-ghc,elieux/ghc,TomMD/ghc,da-x/ghc,tibbe/ghc,shlevy/ghc,elieux/ghc,sdiehl/ghc,wxwxwwxxx/ghc,ezyang/ghc,anton-dessiatov/ghc,mcmaniac/ghc,mfine/ghc,holzensp/ghc,fmthoma/ghc,fmthoma/ghc,green-haskell/ghc,ml9951/ghc,ghc-android/ghc,mettekou/ghc,ilyasergey/GHC-XAppFix,wxwxwwxxx/ghc,da-x/ghc,mettekou/ghc,vTurbine/ghc,fmthoma/ghc,vikraman/ghc,nathyong/microghc-ghc,mcschroeder/ghc,vikraman/ghc,sgillespie/ghc,ilyasergey/GHC-XAppFix,oldmanmike/ghc,oldmanmike/ghc,da-x/ghc,vikraman/ghc,nkaretnikov/ghc,mcmaniac/ghc,sdiehl/ghc,elieux/ghc,sdiehl/ghc,lukexi/ghc-7.8-arm64,fmthoma/ghc,green-haskell/ghc,vTurbine/ghc,mettekou/ghc,nomeata/ghc,siddhanathan/ghc,elieux/ghc,elieux/ghc,snoyberg/ghc,lukexi/ghc-7.8-arm64,TomMD/ghc,lukexi/ghc,sgillespie/ghc,elieux/ghc,sgillespie/ghc,olsner/ghc,ezyang/ghc,ghc-android/ghc,mcschroeder/ghc,anton-dessiatov/ghc,forked-upstream-packages-for-ghcjs/ghc,snoyberg/ghc,hferreiro/replay,wxwxwwxxx/ghc,lukexi/ghc,frantisekfarka/ghc-dsi,oldmanmike/ghc,nathyong/microghc-ghc,forked-upstream-packages-for-ghcjs/ghc,ilyasergey/GHC-XAppFix,christiaanb/ghc,da-x/ghc,sgillespie/ghc,ezyang/ghc,siddhanathan/ghc,ml9951/ghc,tibbe/ghc,TomMD/ghc,gcampax/ghc,sdiehl/ghc,acowley/ghc,ryantm/ghc,ryantm/ghc,nkaretnikov/ghc,GaloisInc/halvm-ghc,tjakway/ghcjvm,AlexanderPankiv/ghc,wxwxwwxxx/ghc,ml9951/ghc,mfine/ghc,TomMD/ghc,siddhanathan/ghc,olsner/ghc,nathyong/microghc-ghc,shlevy/ghc,gcampax/ghc,fmthoma/ghc,gridaphobe/ghc,ekmett/ghc,sdiehl/ghc,TomMD/ghc,ml9951/ghc,ekmett/ghc,acowley/ghc,mfine/ghc,olsner/ghc,frantisekfarka/ghc-dsi,nkaretnikov/ghc,olsner/ghc,gridaphobe/ghc,hferreiro/replay,tjakway/ghcjvm,vTurbine/ghc,vikraman/ghc,acowley/ghc,forked-upstream-packages-for-ghcjs/ghc,elieux/ghc,da-x/ghc,siddhanathan/ghc,urbanslug/ghc,bitemyapp/ghc,siddhanathan/ghc,snoyberg/ghc,nushio3/ghc,nathyong/microghc-ghc,da-x/ghc,snoyberg/ghc,nushio3/ghc,jstolarek/ghc,nushio3/ghc,mcmaniac/ghc,ryantm/ghc,anton-dessiatov/ghc,bitemyapp/ghc,sdiehl/ghc,gridaphobe/ghc,AlexanderPankiv/ghc,acowley/ghc,vTurbine/ghc,gcampax/ghc,mcschroeder/ghc,ml9951/ghc,ekmett/ghc,vTurbine/ghc,gridaphobe/ghc,holzensp/ghc,anton-dessiatov/ghc,wxwxwwxxx/ghc,shlevy/ghc,spacekitteh/smcghc,ghc-android/ghc,forked-upstream-packages-for-ghcjs/ghc,snoyberg/ghc,ml9951/ghc,acowley/ghc,jstolarek/ghc,frantisekfarka/ghc-dsi,christiaanb/ghc,vTurbine/ghc,forked-upstream-packages-for-ghcjs/ghc,frantisekfarka/ghc-dsi,lukexi/ghc-7.8-arm64,gcampax/ghc,sgillespie/ghc,AlexanderPankiv/ghc,TomMD/ghc,lukexi/ghc-7.8-arm64,nkaretnikov/ghc,AlexanderPankiv/ghc,gcampax/ghc,christiaanb/ghc,mcschroeder/ghc,vikraman/ghc,vikraman/ghc,da-x/ghc,GaloisInc/halvm-ghc,tjakway/ghcjvm,spacekitteh/smcghc,mcschroeder/ghc,ryantm/ghc,spacekitteh/smcghc,ezyang/ghc,urbanslug/ghc,jstolarek/ghc,tjakway/ghcjvm,GaloisInc/halvm-ghc,vikraman/ghc,anton-dessiatov/ghc,hferreiro/replay,ghc-android/ghc,nomeata/ghc,gcampax/ghc,ghc-android/ghc,TomMD/ghc,hferreiro/replay,christiaanb/ghc,jstolarek/ghc,urbanslug/ghc,mfine/ghc,nushio3/ghc,holzensp/ghc,jstolarek/ghc,frantisekfarka/ghc-dsi,mcmaniac/ghc,nkaretnikov/ghc,ezyang/ghc,snoyberg/ghc,forked-upstream-packages-for-ghcjs/ghc,holzensp/ghc,nushio3/ghc,ml9951/ghc,green-haskell/ghc,nomeata/ghc,AlexanderPankiv/ghc,shlevy/ghc,ekmett/ghc,lukexi/ghc,GaloisInc/halvm-ghc,acowley/ghc,bitemyapp/ghc,anton-dessiatov/ghc,nushio3/ghc,ghc-android/ghc,christiaanb/ghc,ezyang/ghc,oldmanmike/ghc,nomeata/ghc,gridaphobe/ghc,shlevy/ghc,nushio3/ghc,gridaphobe/ghc,urbanslug/ghc,mcschroeder/ghc,acowley/ghc,mfine/ghc,holzensp/ghc,ghc-android/ghc,fmthoma/ghc,urbanslug/ghc,AlexanderPankiv/ghc,GaloisInc/halvm-ghc,tjakway/ghcjvm,tjakway/ghcjvm,forked-upstream-packages-for-ghcjs/ghc,ryantm/ghc,wxwxwwxxx/ghc,anton-dessiatov/ghc,GaloisInc/halvm-ghc,mcschroeder/ghc,oldmanmike/ghc,mettekou/ghc,gcampax/ghc,shlevy/ghc,siddhanathan/ghc,nkaretnikov/ghc,green-haskell/ghc,mettekou/ghc,nkaretnikov/ghc,GaloisInc/halvm-ghc,olsner/ghc,ilyasergey/GHC-XAppFix,mfine/ghc,tibbe/ghc,ekmett/ghc,lukexi/ghc