fix runtests to set LD_LIBRARY_PATH environment variable.
fix runtests to set LD_LIBRARY_PATH environment variable.

Patch from Karel Gardas <karel.gardas@centrum.cz>.

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