updating bitcoin to 0.9.2.1
fixing whitespace
plan9port:
	- Update to 20140306
	- Fixed libXt dependency.  The compiler could not find X11/IntrinsicP.h, even though it is available through the nix store.  I think there must be some issue with the 9c compiler being used and not obeying the CFLAGS that nix is supposed to pass.  There are probably other dependencies I'm missing, but 9c found in my /usr/include.
plan9port: builder.sh called install script twice, meaning a redundant recompile.
Merge branch 'master' of ssh://github.com/vvanpo/nixpkgs into plan9port
nano: support system-wide nanorc

This patch does two things
1. builds nano with sysconfdir=/etc; and
2. adds an option programs.nano.nanorc
nano: bump to version 2.3.6
zotero: version bump 4.0.21.1 -> 4.0.21.2
firefox: bring back version 30.0 for zotero
get xorg/x11 working on Darwin
fix mesa_drivers
dhcpd: Update 4.1-ESV-R6 -> 4.3.0

Additionally add the ability to run as a non-root user / group by including
paranoia patches in the build.
nixos/dhcp: Modernize ddns-update-style
nixos/dhcpd: Add the ability to drop privileges
nixos/dhcpd: Use dhcp user instead of nobody
nixos/dhcpd: Convert to systemd from upstart
nixos/dhcpd: Wait until network interfaces are configured to start
license: Add isc
dhcp: Update meta information and add maintainership
pidgin-latex-sf: bump reversion, url and hash

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

@vcunat: fix URL.