recovery: Compatibility with upstream minui change

 * minui is changing a lot upstream. We won't merge it here, but
   it's being used in another branch. Add compatibility in CWM
   so that we can move forward.

Change-Id: I8a3289df2d7bc569229b7212c22adb90d4e76ffd

Conflicts:
	minui/minui.h
Support f2fs in update script