Loosen bytestring and containers deps for ghc 7.5
Loosen bytestring and containers deps for ghc 7.5

FranklinChen/blaze-markup,dylex/blaze-markup,Soostone/blaze-markup-haste,dylex/blaze-markup,Soostone/blaze-markup-haste,mikehat/blaze-all,mikehat/blaze-all,FranklinChen/blaze-markup,mikehat/blaze-all