[project @ 2002-08-20 10:32:48 by simonmar] Fix a buglet in CorePrep:  an expression such as
[project @ 2002-08-20 10:32:48 by simonmar]
Fix a buglet in CorePrep:  an expression such as

	case __coerce (\x -> e) :: T of { ... }

would be left as is, but the lambda expression should really be
abstracted as a let (causes a panic later in srtExpr; shown up by
the dynamic001 test).  There was a missing call to deLam in the case
for Case expressions in corePrepExprFloat.

In addition, I made a new version of deLam, deLamFloat, which can
float any bindings generated.  This helps to generate slightly cleaner
code in the above case (the binding is floated out of the scrutinee).

Also: GC unused imports while I'm here.

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