Added MonetDB NixOS module.
fixed monetdb's gid to be the same with its id.
python-autopep8: new package

autopep8 is a tool that automatically formats Python code to conform to
the PEP 8 style guide.

https://pypi.python.org/pypi/autopep8/
libdvdread: update to 4.2.1
libpwquality: factor out from gnome-control-center
gnome-disk-utility: new package

A udisks graphical front-end

http://en.wikipedia.org/wiki/GNOME_Disks
pidgin: adopt the orphan, as I use it daily

CC #992.
glibc: Rename 2.18 -> 2.19
glibc: Update to 2.19
coreutils: Disable parallel building
valgrind: Support Glibc 2.19
checkinstall: fix build with glibc-2.19
go: don't assume sse2 on i686 (maybe fixes build)
glibc: do not use system ld.so.preload (close #1788)

Modified according to the PR comment.
glibc: fix a math problem by upstream patch
texinfo: move ncurses support into texinfoInteractive

This, for example, drops the stdenv dependency on ncurses.
Merge #1633: --enable-symlinks in ncurses and e2fsprogs
gcc-{,cross-}wrapper: add 'cpp' wrapper (close #1820)

The gcc-wrapper doesn't wrap 'cpp'. This breaks some software (such as
Buildroot) because the 'cpp' they get come from the non-wrapped gcc
package which doesn't know about any standard include paths.

gcc-cross-wrapper is untested.
gcc-wrapper: preferLocalBuild, as it does little work

This is re-revert of e31523a369a.
Merge #1905: perl: disable tests that involve networking

I rebased the branch not to include newer changes from master.