gtk2hsC2hs fails to resolve --include when given paths with spaces.

[guest]

When building pango with cabal it appears to remove spaces from the passed --include resulting in not finding .chi files that exist in the passed paths. My gtk2hsC2hs reports its version as 0.13.4. Attached is the build log.

[duncan]

Darcs patch "Fix handling of cpp flags. Allows dirs with spaces."

[duncan]

The attached patch is totally untested beyond checking it compiles. That said, it follows the approach taken in mainline c2hs so I expect it'll work (bar any possible typos).

[duncan]

Fix behaviour of -i flag for windows paths

[axel]

Ups, I fixed that myself the other day, sorry Duncan!