Fix virtualenvwrapper shell scripts
haskell-SDL: mark package broken

Doesn't compile with GHC 7.8.3:

  Graphics/UI/SDL/Events.hsc:56:23:
      Module ‘Data.Typeable’ does not export ‘Typeable(typeOf)’
haskell-Chart-gtk: mark package as broken

https://github.com/timbod7/haskell-chart/issues/41
lua-5: don't restrict the platforms which can build this package

Hydra builds run only on Linux, but all other platforms can build LUA,
too, if necessary.
Manual: Render function defaults
Manual: Remove outdated author stuff
Manual: Generate PDF

Issue NixOS/nixos#237.
inkscape: add python to the PATH, fixes #3449
glib-tested: fix running tests
Fix NixOS evaluation on i686-linux
libpar2: Update to 0.4
nzbget: Update to 13.0
GHC 7.6 and earlier cannot compile aeson 0.8.x.
emacs: Fix building on Darwin with recent versions of GCC

This gets rid of the "unexec: unrecognized section __static_data in
__DATA segment" error while dumping Emacs.
emacs: On Darwin, don't depend on gconf and cairo
GHC 7.6.x required scientific 0.2.x to build aeson 0.7.x.
Merge pull request #3507 from jochu/nix-update-nzbget

Update nzbget (13.0) and libpar2 (0.4)
gnuplot: Reduce dependency bloat a bit
nixos/znc: add option to add module packages to znc

Besides that add option for extra znc config and fix a lot of stuff
GHC 7.6.x requires older attoparsec to build with aeson 0.7.x.