OpenBSD/sparc Haskell support

[Donald Bruce Stewart]

Hello OpenBSD Haskellers,

GHC is now distributed for the sparc architecture in the OpenBSD ports
tree.

This means that happy, haddock, alex, hmake and other Haskell tools
already in the tree are now being built for sparc/openbsd too.

Just update to the current ports tree to use this stuff.

Cheers,
    Don

N.B. this is GHC 6.0.1, port tree builds for sparc, for 6.2 are coming soon