MPD.connect: use Integer instead of PortNumber.
MPD.connect: use Integer instead of PortNumber.

Convert internally to make it a little bit easier for users by removing
the need to either import Network or call fromInteger (of course, this is
not at all necessary in most cases).

darcs-hash:20070807102256-ea16c-cbc6647687c20fb752d95d66d13b5aa79d43ed77.gz

beni55/libmpd-haskell,sol/libmpd-haskell