No marshaller for CULLong and C2HSImp.CULLong

[vmchale]

This seems to be an oversight; I can work around it by using id to marshal in/out.

See e.g. https://github.com/vmchale/lzlib/blob/master/src/Codec/Lzip/Raw.chs#L86.

If I remove the id marshalers I get

c2hs: Errors during expansion of binding hooks:

src/Codec/Lzip/Raw.chs:83: (column 48) [ERROR]  >>> Missing "in" marshaller!
  There is no default marshaller for this combination of Haskell and C type:
  Haskell type: CULLong
  C type      : C2HSImp.CULLong

[deech]

Fixed #243. Please close if it works for you.

[vmchale]

Thanks :)