Add .bss support for inlining across dexfiles within Oat

We can safely reference other dexfiles within the same oat file for cross-dex inlining.

This CL makes the OptStat#NotInlinedBss drop to less than 1% of the not-inlining cases.

Test: ART tests
Change-Id: I676d48d973abf7a6f8412cf3b7bb73afd7747f31
13 files changed