Merge pull request #4063 from qknight/dcfldd

dcfldd: added advanced dd replacement
Merge pull request #4150 from qknight/dfc

dfc-3.0.4: a colored df -h replacement
Merge pull request #4149 from qknight/dog

dog-1.7: added potential cat replacement
tzdata: bump to 2014g.
Merge pull request #4147 from cstrahan/ruby-interp-fixes

Fix the new Ruby interpreters (fixes #3509).
Merge pull request #4151 from lostdj/ltp/master/tzdata2014g

tzdata: bump to 2014g
httpd: Don't emit robots.txt if there are no robots entries
httpd: Add option for specifying robots.txt
radvd: 2.6 -> 2.7
nixos/nat: Don't flush tables, create subchains for autogenerated rules
nixos/tests/nat: Modify test to accomodate for firewall consolidation
dwarf-fortress: Bump to 0.40.13.
Remove unmaintained gnupg2_1.
Comment on optional dependencies for Gnupg.
haskell-here: revert "new expression"

This reverts commit 3e5bcdc327eb0347e15ffe2072b2b61f80218d32. The
package doesn't compile.
Update KDevelop to 4.7.0.
grails: new package

Grails is an Open Source, full stack, web application framework for the
JVM. It takes advantage of the Groovy programming language and
convention over configuration to provide a productive and stream-lined
development experience.

http://grails.org/
Upgraded glances package to v2.1, and packaged its dependencies.

Disabled glances for pypy.
Added termite package and updated vte to be compatible.
nixos/tests/nat: Add tests for standalone and firewall based nat