poppler: Update to 0.20.5, patch in qt4+cairo+subpixel rendering.
jquery-ui: Update to 1.9.1 (1.8.10 is no longer available upstream).
python-sip: Update to 4.13.3 as .2 is gone from upstream server.
pygobject: Enable introspection. Required by BlueZ.
bluez: Enable dbus activation of bluetoothd.
gobject: Add missing parameters in python-packages.nix.
byacc: Move to another upstream source.
Add "arbtt" along with its Haskell dependencies.
Add perl Text::BibTeX, along with Config::AutoConf and ExtUtils::LibBuilder.
haskell: Add alsa-core, alsa-pcm, carray and sample-frame.