add leveldb
btsync: upgrade to 1.0.132
ninja: move out of pythonPackages

ninja is a build system written in C++ that just happens to use python
to build/install *itself*. It is not a "python package".

After this commit, ninja will be at pkgs.ninja instead of
pkgs.pythonPackages.ninja.
ninja: add description and license
ninja: use version attribute

...to avoid the risk of downloading a different version than the package
name suggests (i.e. on the next version bump).
Merge pull request #521 from bjornfor/ninja

Ninja: some small changes
Merge pull request #520 from dysinger/t/leveldb

Add Google's LevelDB (BSD) to Nix
btrfsprogs: upgrade to latest git

this incorporates all patches we already used and makes btrfs-send
work with kernel 3.9+
haskell-accelerate-cuda: update to version 0.13.0.0
haskell-accelerate-examples: update to version 0.13.0.0
haskell-accelerate-io: update to version 0.13.0.0
haskell-accelerate: update to version 0.13.0.0
haskell-monad-loops: update to version 0.4.2
haskell-language-c-quote: remove obsolete version 0.4.4
haskell-cuda: drop obsolete version 0.4.1.1
haskell-cufft: add version 0.1.0.1
haskell-accelerate-fft: add version 0.13.0.0
haskell-accelerate: disable haddock phase to avoid build error

    Running Haddock for accelerate-0.13.0.0...
    Warning: The documentation for the following packages are not installed. No
    links will be generated to these packages: rts-1.0
    Preprocessing library accelerate-0.13.0.0...
    Setup: dist/doc/html/accelerate/haddock-prolog16263.txt: invalid argument
e2fsprogs: Update to 1.42.7
e2fsprogs: Fix manpages

See issue #523.