Add doctest examples for Data.Char
Add doctest examples for Data.Char

This adds doctest examples for every function and data type in `Data.Char`.

Reviewed By: austin, hvr

Differential Revision: https://phabricator.haskell.org/D371

urbanslug/ghc,nathyong/microghc-ghc,gcampax/ghc,green-haskell/ghc,elieux/ghc,nkaretnikov/ghc,fmthoma/ghc,gcampax/ghc,siddhanathan/ghc,mfine/ghc,vTurbine/ghc,christiaanb/ghc,green-haskell/ghc,mettekou/ghc,ghc-android/ghc,TomMD/ghc,olsner/ghc,mettekou/ghc,sgillespie/ghc,elieux/ghc,nkaretnikov/ghc,jstolarek/ghc,nathyong/microghc-ghc,tjakway/ghcjvm,ml9951/ghc,siddhanathan/ghc,mettekou/ghc,urbanslug/ghc,bitemyapp/ghc,gcampax/ghc,nkaretnikov/ghc,shlevy/ghc,oldmanmike/ghc,oldmanmike/ghc,fmthoma/ghc,gridaphobe/ghc,snoyberg/ghc,tjakway/ghcjvm,olsner/ghc,sgillespie/ghc,acowley/ghc,TomMD/ghc,ezyang/ghc,mfine/ghc,urbanslug/ghc,jstolarek/ghc,acowley/ghc,snoyberg/ghc,mettekou/ghc,vikraman/ghc,nushio3/ghc,forked-upstream-packages-for-ghcjs/ghc,ezyang/ghc,forked-upstream-packages-for-ghcjs/ghc,elieux/ghc,anton-dessiatov/ghc,ezyang/ghc,tjakway/ghcjvm,siddhanathan/ghc,christiaanb/ghc,siddhanathan/ghc,nkaretnikov/ghc,shlevy/ghc,shlevy/ghc,nushio3/ghc,green-haskell/ghc,snoyberg/ghc,ml9951/ghc,TomMD/ghc,ezyang/ghc,nathyong/microghc-ghc,acowley/ghc,vikraman/ghc,TomMD/ghc,mfine/ghc,anton-dessiatov/ghc,da-x/ghc,siddhanathan/ghc,olsner/ghc,nathyong/microghc-ghc,shlevy/ghc,nushio3/ghc,jstolarek/ghc,oldmanmike/ghc,nkaretnikov/ghc,tjakway/ghcjvm,shlevy/ghc,GaloisInc/halvm-ghc,AlexanderPankiv/ghc,oldmanmike/ghc,shlevy/ghc,forked-upstream-packages-for-ghcjs/ghc,gcampax/ghc,nushio3/ghc,fmthoma/ghc,GaloisInc/halvm-ghc,vTurbine/ghc,urbanslug/ghc,christiaanb/ghc,bitemyapp/ghc,sdiehl/ghc,gridaphobe/ghc,ghc-android/ghc,oldmanmike/ghc,elieux/ghc,sdiehl/ghc,forked-upstream-packages-for-ghcjs/ghc,mcschroeder/ghc,nkaretnikov/ghc,snoyberg/ghc,da-x/ghc,snoyberg/ghc,GaloisInc/halvm-ghc,forked-upstream-packages-for-ghcjs/ghc,wxwxwwxxx/ghc,mfine/ghc,anton-dessiatov/ghc,vikraman/ghc,jstolarek/ghc,nushio3/ghc,green-haskell/ghc,fmthoma/ghc,sdiehl/ghc,ghc-android/ghc,sgillespie/ghc,siddhanathan/ghc,fmthoma/ghc,GaloisInc/halvm-ghc,vikraman/ghc,sdiehl/ghc,snoyberg/ghc,wxwxwwxxx/ghc,gridaphobe/ghc,sgillespie/ghc,sgillespie/ghc,AlexanderPankiv/ghc,green-haskell/ghc,shlevy/ghc,olsner/ghc,gridaphobe/ghc,vikraman/ghc,anton-dessiatov/ghc,ml9951/ghc,mettekou/ghc,mettekou/ghc,anton-dessiatov/ghc,tjakway/ghcjvm,elieux/ghc,ezyang/ghc,wxwxwwxxx/ghc,wxwxwwxxx/ghc,urbanslug/ghc,GaloisInc/halvm-ghc,mcschroeder/ghc,ezyang/ghc,acowley/ghc,bitemyapp/ghc,acowley/ghc,da-x/ghc,AlexanderPankiv/ghc,GaloisInc/halvm-ghc,acowley/ghc,mcschroeder/ghc,ml9951/ghc,GaloisInc/halvm-ghc,da-x/ghc,ml9951/ghc,tjakway/ghcjvm,nathyong/microghc-ghc,urbanslug/ghc,sdiehl/ghc,acowley/ghc,fmthoma/ghc,sdiehl/ghc,wxwxwwxxx/ghc,mcschroeder/ghc,ghc-android/ghc,gridaphobe/ghc,sgillespie/ghc,mfine/ghc,AlexanderPankiv/ghc,nathyong/microghc-ghc,da-x/ghc,bitemyapp/ghc,christiaanb/ghc,wxwxwwxxx/ghc,ghc-android/ghc,TomMD/ghc,vTurbine/ghc,ghc-android/ghc,bitemyapp/ghc,da-x/ghc,vikraman/ghc,ml9951/ghc,elieux/ghc,anton-dessiatov/ghc,snoyberg/ghc,mcschroeder/ghc,forked-upstream-packages-for-ghcjs/ghc,vTurbine/ghc,AlexanderPankiv/ghc,tjakway/ghcjvm,urbanslug/ghc,gridaphobe/ghc,fmthoma/ghc,ezyang/ghc,siddhanathan/ghc,mcschroeder/ghc,gridaphobe/ghc,oldmanmike/ghc,da-x/ghc,ghc-android/ghc,mettekou/ghc,olsner/ghc,anton-dessiatov/ghc,mcschroeder/ghc,nkaretnikov/ghc,TomMD/ghc,forked-upstream-packages-for-ghcjs/ghc,nathyong/microghc-ghc,sdiehl/ghc,oldmanmike/ghc,elieux/ghc,christiaanb/ghc,vTurbine/ghc,mfine/ghc,gcampax/ghc,vTurbine/ghc,ml9951/ghc,christiaanb/ghc,nushio3/ghc,jstolarek/ghc,gcampax/ghc,mfine/ghc,wxwxwwxxx/ghc,olsner/ghc,nushio3/ghc,TomMD/ghc,vTurbine/ghc,AlexanderPankiv/ghc,ml9951/ghc,olsner/ghc,christiaanb/ghc,AlexanderPankiv/ghc,gcampax/ghc,sgillespie/ghc,vikraman/ghc