[arch-haskell] HP 2010.2.0.0 status update

[Don Stewart]

The big upgrade is almost complete. GHC 6.12.3 is in extra, and the
majority of binary packages have been rebuilt. AUR is up to date.

The last steps are:

    * haskell-parallel package rebuilt against 6.12.3 [vegai]
    * haskell-quickcheck package rebuilt against 6.12.3 [vegai]
    * bump haskell-cgi to HP version (3001.1.7.3)
    * bump happy (1.18.5)

I've rolled an AUR meta-package "haskell-platform" but it awaits these
versions to be built prior to uploading.  At which point, we'll be complete.