fix Utils.encode_bytes
fix Utils.encode_bytes

No one has encountered this yet, but there was a bug in encode_bytes if
ProcHelper.__init__ is called with an input string (that needs to be
fixed too.)

SublimeHaskell/SublimeHaskell,bscottm/SublimeHaskell,bscottm/SublimeHaskell,SublimeHaskell/SublimeHaskell