Add flags to ignore FeatureHasRAS.
Fix MIPS exception personality relocation.

Some MIPS executable loaders prohibit the relocation
in the read-only section.  Thus, we have to use
DW_EH_PE_indirect instead.
Add ndk triple for Android bitcode.

Change-Id: Iae73b39a08f33c28714538bd5693a0f9fc39abb5

Conflicts:

	include/llvm/ADT/Triple.h