hg-git: 0.3.1 -> 0.6.1, and its dependency dulwich: 0.8.7 -> 0.9.7
dulwich: added tests dependencies.
Adds license CeCILL-B
coq: setup-hook for libraries

Adds a hook to automatically populate the $COQPATH variable.
Coq libraries are expected to be installed in

    lib/coq/${coq-version}/user-contrib/
Adds three coq libraries: containers, mathcomp, ssreflect

Containers is a reimplementation of the FSets/FMaps library from the
standard library, using typeclasses.

Homepage: http://coq.inria.fr/pylons/pylons/contribs/view/Containers/v8.4

The Mathematical Components (mathcomp) contains advanced theory files
covering a wide spectrum of mathematics.

Homepage: http://ssr.msr-inria.inria.fr/

Ssreflect is a proof language (plugin for Coq) and a small set of core
theory libraries about boolean, natural numbers, sequences, decidable
equality and finite types.

Homepage: http://ssr.msr-inria.inria.fr/
Removes duplicate ssreflect
ProofGeneral: makes the dependency on TeXLive optional

And fixes the default value of $PGHOME
nixpkgs manual: packaging coq libraries
libLAS: initial expression

Closes #4233
kid3: fix evaluation

cc @AndersonTorres
seturgent: new package

Closes #4329
Merge pull request #4285 from k0ral/hg-git

hg-git: 0.3.1 -> 0.6.1, and its dependency dulwich: 0.8.7 -> 0.9.7
Add a few meta.branch to please monitor
snd: update from 14.9 to 15.0
audit: update from 2.3.2 to 2.4
babeld: update from 1.5.0 to 1.5.1
bluez5: update from 5.22 to 5.23
dash: update from 0.5.7 to 0.5.8
enet: update from 1.3.9 to 1.3.12
ffmpeg-0.6: branch info