z-encode digits at the start of a symbol name; fixes trac #2997 Digits already have a couple of meanings in z-encoding (Z3T is a tuple, and z123U is a unicode character), so we encode digits as unicode characters to avoid trying to squeeze in another meaning.
z-encode digits at the start of a symbol name; fixes trac #2997
Digits already have a couple of meanings in z-encoding (Z3T is a tuple,
and z123U is a unicode character), so we encode digits as unicode
characters to avoid trying to squeeze in another meaning.

Also removed a little GHC < 6.2 compatibility hack.

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