Two patches for hackage-server

[Bas van Dijk]

Hi Duncan,

as promised attached is the patch that turns crypt into a safe ccall.

Also attached is a patch that updates hackage-server to the latest
versions of its dependencies. This enables it to build on ghc-7.2.1. I
also depend on a new unreleased version of rss. I also attached this
patch for rss. I'm currently looking for the new maintainer of rss
(Bjorn Bringert doesn't maintain it anymore). If nobody steps up, I
will take it over.

Regards,

Bas
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