ART: Introduce CompatThrow

Add an "virtual" instruction flag to signal a historical throw
that is not captured by kThrow. Both kinds of instructions need
to capture the work line at the beginning of a verification step.

Long-term, remove CompatThrow.

"Annotate" return-object.

Bug: 121245951
Test: m test-art-host
Change-Id: I07e9f07da3ebcc9ccd1191ffc2c145b2c83a84f8
1 file changed