Split ShowVersion etc off into a different type to DoInteractive etc This fixes trac #1348 (ghci --help gave ghc's help), and also tidies things up a bit. Things would be even tidier if the usage.txt files were put into a .hs file, so that ShowUsage wouldn't need to be able to find the libdir.
Split ShowVersion etc off into a different type to DoInteractive etc
This fixes trac #1348 (ghci --help gave ghc's help), and also tidies
things up a bit. Things would be even tidier if the usage.txt files were
put into a .hs file, so that ShowUsage wouldn't need to be able to find
the libdir.

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