chromium: Update all channels to latest versions.

This closes #1623, and updates _all_ channels to the corresponding
latest upstream versions.

Thanks to @wizeman for opening the pull request noted above and for
another update in between, @aristidb for fixing the patcheShebangs issue
and @shlevy for notifying me about the build failure in stdenv-updates
in the first place.

Sorry to everyone for my inactivity lately.

The following changes were needed in order to build those new releases:

 * Patch out /bin/echo to allow building with all options enabled.
 * Always use GN from the source tree.
 * Remove import of depot_tools for version 34.
 * Drop version 32 specific stuff.

With this commit, the following new upstream versions are introduced:

stable: 32.0.1700.77 -> 32.0.1700.102 (builds fine, tested)
beta:   32.0.1700.19 -> 33.0.1750.46  (builds fine, tested)
dev:    33.0.1712.4  -> 34.0.1809.0   (build broken with gnome_keyring)

The dev version requires a more recent version gnome_keyring and thus
won't build if gnomeKeyringSupport is set to true. I haven't tested this
build without gnomeKeyringSupport yet, so it might be broken and will be
fixed later.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Change the crypt-storage file to be hex encoded instead of raw binary. To update from the previous configuration, convert your crypt-storage file from raw binary to hex.
gtk3: change name to gtk+3-3.*, don't lower priority

This is to allow alongside installation of gtk2 and gtk3 in user envs.
Therefore, decreasing the priority of gtk3 was superfluous now.
cuda: install the SDK using multiple-outputs support
Implement muli-user authentication for yubikey pba, i.e. multiple users can now share a single luks keyslot.
This is achieved by having multiple lines per storage file, one for each user (if the feature is enabled); each of these
lines has the same format as would be the case for the userless authentication, except that they are prepended with a
SHA-512 of the user's id.
Merge pull request #1628 from tomberek/alienfx_libusb

Add #include <unisted.h> for sleep and usleep
Add myself as a maintainer for ykpers and libyubikey
nbd: update to version 3.7
Merge branch 'pr/cuda-sdk' of git://github.com/dguibert/nixpkgs
Add library dependencies explicitly
Merge branch 'yubikey' of git://github.com/Calrama/nixpkgs
mailpile: update dev version
haskell-connection: update to version 0.2.0
haskell-fay-base: update to version 0.19
haskell-fay: update to version 0.19.0.1
haskell-lens: update to version 3.10.2
haskell-monadcryptorandom: update to version 0.6.1
haskell-network-conduit-tls: update to version 1.0.4.1
haskell-reactive-banana-wx: update to version 0.8.0.0
haskell-reactive-banana: update to version 0.8.0.0