Put FileUtils back into android_runtime

We still use it for non-fat volume management

Change-Id: I42efeb83b8f12e7734e4bf03326526cc220d022a
Parse UUID string with Long.parseLong

Integer.parseInt throws an NFE for values greater than 0x7fffffff.

Change-Id: I1fb9e4980b2058a4071dd80d0b9abd8efeb870ab