GHCi: Fix multi-line input line/column-number refs
GHCi: Fix multi-line input line/column-number refs

This commit addresses #8051 by fixing

 - Incorrect column indices reported in error messages for
   single-line and multi-line input,

 - incorrect line numbers reported in error messages for
   expressions entered in multi-line input, and

 - inhibiting the confusing interaction between `:{` and `:set +m`
   causing the triggering of implicit multi-line continuation
   mode right after `:}` terminates the multi-line entry block.

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