Modified interfaces file so that the various interfaces do come up when booting.

Most important change seems to be to remove the 'auto lo' stanza. By
adding our content to the existing file, it appeared twice which likely
caused the problem.
Removed part of tmux.conf which requires an external application.
Added usbutils to the package list.
Fixed a warning wrt modules during the build phase.

Thanks to goranche (https://github.com/goranche) for the hint.
Updated installer to use kernel version 3.12.

The sd_mod kernel module has a new dependency on crct10diff_common, so
included that.
Just in case I also included it's 'sibbling' crct10diff_generic.
Merge remote-tracking branch 'debian-pi/master'.

Conflicts:
	build.sh
Removed some extraneous empty lines.
Added code that resolved kernel module dependencies are automatically copies all needed kernel modules to the install image
Just added a comment to the code
Added 'some' comments to the code so it's a bit easier to follow... probably too many, but they can easily be removed
Added absolute path to depmod invocation
Split the INSTALL_MODULES value into separate lines.

This makes it better readable since each module is on it's own line.
Moved the functions to the top of the file, below the constants.
Changed the console blank timeout

The screen blanks after a predefined timeout (during installation).
This change sets that timeout to 60 minutes, buy which time the
installation should hopefully be finished.
Changed README.md

Just a small update to the "First boot" section, added a link to "Installer customization" to clarify that the root password can be set during install as well
Merge remote-tracking branch 'upstream/master'
Changed README.md

Added a link to the installer-config.txt section with an explanation
that the default password can be set during installation as well
Merge pull request #91 from goranche/master

Added a link to the installer-config.txt section with an explanation that the default password can be set during installation as well.
Fixed name for setting root's password.
Changed creation of a temporary file

the code now checks before using a particular command (multiple
commands are supported) and will fall back to creating a simple file in
/tmp
Changed the -t type invocation of mktemp