Always load the "configs" kernel module

We used to have the configuration of the kernel available in a
somewhat convenient place (/run/booted-system/kernel-modules/config)
but that has disappeared.  So instead just make /proc/configs.gz
available.  It only eats a few kilobytes.
nixUnstable: Update to 1.7pre3522_f7e077a
yap: update from 6.2.2 to 6.3.3
swiProlog: update from 6.6.1 to 6.6.2
cppcheck: update from 1.63 to 1.64
sshfsFuse: update from 2.4 to 2.5
gnutls on darwin: drop patch that is integrated now
libssh: update, incl. features and CVE-2014-0017 fix

Also add pkgconfig to inputs, as it was looked for by cmake.
Dependent packages seem to build fine.
ffmpeg_2: update 2.1.1 -> .4, fixing CVE-2014-209{7,8,9}
Security update: update to warp 2.0.3.3
See https://github.com/yesodweb/wai/issues/231 for details.
opensmtpd: Update to 5.4.2p1
Allow ntpq locally
Merge pull request #1885 from errge/ntp

Allow ntpq locally
Merge pull request #1884 from pSub/warp-security-update

Security update: update to warp 2.0.3.3
haskell-hsini: add version 0.2
haskell-esqueleto: update to version 1.3.4.6
haskell-mime-mail: update to version 0.4.4.1
haskell-postgresql-libpq: update to version 0.9.0.0
haskell-LambdaHack: update to version 0.2.12
haskell-hsini: disable test suite to avoid build errors caused by a bogus cabal file