Update master branch to use submodule for binaries in order to reduce
checkout size.
Update master to v1.2 release (note: requires OS images that use the
revised partitioning scheme - see #64 for details)
Update build data file to include version string.
Hot-fix release 1.2.1 to fix #70
Update master to v1.3 release
- Fixup merge errors
Fix the 'rescueshell' cmdline option so that it actually works!

Add a 'disablesafemode' cmdline option to prevent safe mode
being incorrectly triggered - should help with cases like
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=28&t=57016