gst-plugins-bad: add description and set license correctly
gst-plugins-good: add description and set license correctly
gst-plugins-ugly: add description
add gnonlin 1.2.0
add gst-editing-services 1.2.0
gst-python: update to 1.2.0
Merge pull request #1975 from iyzsong/gstreamer

gstreamer: add/update packages and improve meta
thrift: make it useable with the python wrapper

The python wrapper discards derivations that lack the 'pythonPath'
attribute, so provide a (dummy) pythonPath attribute to make this work:

  pythonFull.override { extraLibs = [ thrift ]; }
haskell-chell: add version 0.3.3
haskell-chell-quickcheck: add version 0.2.2
haskell-options: add version 1.0
haskell-xmobar: update to version 0.20.1
haskell-HDBC: update to version 2.4.0.0
haskell-alsa-pcm: update to version 0.6.0.1
haskell-cipher-aes: update to version 0.2.7
haskell-constraints: update to version 0.3.5
haskell-convertible: update to version 1.1.0.0
haskell-data-accessor-template: update to version 0.2.1.11
haskell-data-accessor: update to version 0.2.2.5
haskell-dbus: update to version 0.10.7