Configure gnupg to use pinentry by default.

This makes gnupg much more usable out of the box.
Remove obsolete patch.
Remove use* options and let the user set optional dependies to null if
they don't want to use them.
Apply recent changes from gnupg/default.nix to gnupg/git.nix

gnupg/git.nix doesn't build, but it didn't build before either.
Add roconnor to GnuPG maintainers.
ncmpc: enable colors and lyrics screen.
ncmpc: bump version to 0.24.
Remove unmaintained gnupg2_1.
Comment on optional dependencies for Gnupg.
wrapFirefox: add support for firefox.icedtea
Merge pull request #4157 from abbradar/icedtea-web

Add support for IcedTea in Firefox
Merge pull request #4144 from 1126/bump-ncmpc

Bump ncmpc to 0.24
Updates ocaml-sexplib and ocaml-typeconv

Fixes OCaml / camlp5 version mismatch
Revert "tzdata: bump to 2014g."

This reverts commit 4dce30e51040b18792ac32726a9d2696017e08f0.

Breaks all go packages.
Merge pull request #4170 from vbgl/ocaml-sexplib-camlp5

Updates ocaml-sexplib and ocaml-typeconv
pypyPackages.sqlalchemy_imageattach: disable tests on pypy
strongswan: Properly handle sysconfdir, build swanctl
add symlink to chromium-browser for xdg-open to work as expected
Update OpenAFS client to version 1.6.9
xfsprogs: 3.1.11 -> 3.2.1