some updates

[Jens Petersen]

> * cabal-0.8.7 is out and in updates-testing now for 1 week.
> Main new feature is an install command which tries to install
> any missing system dependencies before running "cabal install".
> (0.8.8 will make that a bit less strict so it doesn't fail
> when there are dependencies which are not yet packaged.)

Also support for retrieving (cached) tarballs from more than
one (or the default) upstream repo - thanks to Ricky Elrod.

https://admin.fedoraproject.org/updates/FEDORA-2014-0003/cabal-rpm-0.8.7-1.fc20