Add emacs24-nox: emacs built without X (or GTK) libraries.

This commit also fixes an issue where pkgconfig was only added as a
dependency when gtk support was enabled. This made ./configure unable
to find other libraries (libtiff, libxml2, gnutls, and others).
zfs-0.6.2 and spl-0.6.2

Enable parallelBuilding, too.
Don't prefer 'emacs24-nox' over the normal 'emacs24' attribute.
haskell-syb: add version 0.4.1
haskell-Graphalyze: delete obsolete package

This library hasn't compiled in ages.
haskell-SourceGraph: delete obsolete package

This library hasn't compiled in ages.
haskell-tasty: add version 0.2
haskell-contravariant: update to version 0.4.4
haskell-crypto-cipher-tests: update to version 0.0.4
haskell-crypto-cipher-types: update to version 0.0.4
haskell-cryptocipher: update to version 0.5.2
haskell-derive: update to version 2.5.12
haskell-monoid-extras: update to version 0.3.1.0
haskell-postgresql-simple: update to version 0.3.6.0
haskell-securemem: update to version 0.1.3
haskell-stylish-haskell: update to version 0.5.8.0
haskell-hlint: update to version 1.8.51
haskell-hoogle: update to version 4.2.19
haskell-src-exts: add version 1.14.0 and drop obsolete 1.11.1
Switch hoogle, hlint, derive, and stylish-haskell to the latest version of haskell-src-exts.