apktool: release of lollipop-compatible v2.0-RC2

thanks to iBotPeaches for bringing apktool up to lollipop.

contains Lars' changes for compatibility with -holodark (TRDS)
and -hololight (TRLS) directory qualifiers.

Change-Id: Ic53535ce870d6d876c74d24625b6be90873c570d