release-haskell: drop packages that are broken in HP 2013.2.0.0

The following packages don't compile with recent versions of GHC and
seem unmaintained, too: distributedProcess, Ebnf2ps, epic, HFuse,
Hipmunk, hspread, ltk, multiset, strictConcurrency, vacuumCairo, wxcore,
wx, wxdirect.
haskell-repa-examples: update to version 3.2.3.2
haskell-repa: update to version 3.2.3.3
haskell-shakespeare-i18n: update to version 1.0.0.3
haskell-stm-chans: update to version 3.0.0
haskell-stm-conduit: update to version 2.1.0
haskell-cabal2nix: update to version 1.50
haskell-yesod-platform: add version 1.2.0.1