Generate extra userdata partition if needed

* To support variants of devices which may come in 16/32/64GB variants.

Change-Id: I74c32d8316f0450a1445fe95a95e5cabb7a9dd1b
colorize non-fatal javac stderr yellow (and actually display it... at all)

woops!

Signed-off-by: nuclearmistake <nuclearmistake@gmail.com>
Change-Id: I984f428022a68a825aa041866e8d459bd6611f71