Update ledger3 to latest HEAD.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
ledger3: Use short git rev.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
ledger3: Install emacs-lisp files manually.

Build process is currently broken for emacs lisp files.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
heimdall: upgrade to 1.4.0
calibre: upgrade to 1.1
libusb1: upgrade to 1.0.16
linux 3.11

works fine for me, but nvidia binary driver fails once again
Revert "linux: really provide /proc/config.gz"

This reverts commit 68ce9e91e12914f34e55ef16d8f4b6fbcdd9e92a.

/proc/config.gz is available after "modprobe configs"
and in
/run/booted-system/kernel-modules/config
thunderbird: Disable parallel building

Seems to cause random build failures.

http://hydra.nixos.org/build/5956789
Merge pull request #911 from the-kenny/ledger3

Ledger 3: Update to latest git & fixes