Do not chmod +s chvt: instead, rely on sudo

The SUID flag may be lost on update, and relying on sudo is
slightly more secure.

We create a file in /etc/sudoers.d/ : these files are sourced by
default since sudo 1.7.2p1-1 (Ubuntu 10.04 lucid, Debian squeeze).

Fixes #723.
*/releases: Specify if a release should be tested or not

Each release line is now in the following format:
`release[*][|other,key,words]`

 - * indicates that the release is unsupported
 - keywords are comma-separated, and can currently be `test` or
   `notest`. Default is for supported releases to be tested (can
   be overridden with `notest`), and unsupported ones not to be
   tested (can be overridden with `test`).
installer: Fix accidental prefix match.
tests/12-edit-chroot: Test restoring using crouton -f

Restoring using crouton -f corrupts the output of croutonversion,
as a new croutonversion script is installed, but the installer is
not run, so fields are not updated.
installer: Add TARGETNOINSTALL variable

Tells the target file if it will be installed or not, instead of
repeating the same complicated tests over and over again.
installer: Allow host-bin restoration only.

Add a -b option to the installer that only restores host-bin
scripts, based on the target files installed in all existing
chroots.

Incidentally, this fixes #1106 as crouton -f tarball now only
restores host-bin (and not chroot-bin).
installer: Only expand variables if prepare script is needed
12-edit-chroot: Test host-bin restoration (crouton -b).
Fixes after review.
Fixes after review.
enter-chroot: Remap devbroker-access group.

Enables security key users to add themselves to the group, and/or
add custom udev rules.
Merge pull request #1177 from drinkcat/remap-devbroker-access

enter-chroot: Remap devbroker-access group.
Merge pull request #1140 from drinkcat/releases-flags

*/releases: Specify if a release should be tested or not
Merge pull request #727 from drinkcat/sudo-chvt

Do not chmod +s chvt: instead, rely on sudo
installer: Remove TARGETS='check' hack
daemon.sh: Increase run time back to 24 hours.
Merge pull request #1185 from drinkcat/crouton-autotest

daemon.sh: Increase maximum run time back to 24 hours.
installer: Remove useless use of cat
lxde: Do not install wicd

sid pulls it in as recommended dependency.
installer: Ensure .crouton-targets is correct

Generate the file in a temp folder, and copy it over when the
installer starts.