Merge changes I168f24de,I8ec60a98,I3c426ed7,Ic809b0f3

* changes:
  Implement HLoadClass/kBssEntry for boot image.
  Store resolved types for AOT code in .bss.
  Make runtime call on main for HLoadClass/kDexCacheViaMethod.
  Remove HLoadClass::LoadKind::kDexCachePcRelative.