Run "sh ./configure" rather than "sh configure"; part of #7992
Run "sh ./configure" rather than "sh configure"; part of #7992

This fixes a bug with how configure re-execs itself.

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