GHC 7.8 fixes for Typeable changes
GHC 7.8 fixes for block/unblock removal
GHC 7.8 fixes for forkOnIO removal
Merge branch '0.9-stable'

Conflicts:
	src/Snap/Internal/Http/Server/Config.hs
	src/Snap/Internal/Http/Server/Date.hs
	src/Snap/Internal/Http/Server/SimpleBackend.hs