Add --include-cfi compiler option.

Decouple generation of CFI from the rest of debug symbols.
This makes it possible to generate oat with CFI but without
the rest of debug symbols.

This is in line with intention of the .eh_frame section.
The section does not have the .debug_ prefix because it
is considered somewhat different to the rest of debug symbols.

Change-Id: I32816ecd4f30ac4e0dc69d69a4993e349c737f96
12 files changed