Improve `verified`, add `redefined` class status in VerifierDeps

Changes implementation of `unverified_classes_` in VerifierDeps from
std::set<dex::TypeIndex> to `verified_classes_` of type std::vector<bool>
indexed by class def indices. This cleans up the implementation and speeds
up access during fast-verify. Encoding remains the same - a set of indices
of unverified classes - only these are now class def indices.

A second bit vector `redefined_classes_` is added, also indexed by class
def indices. It records classes that were not verified because they were
eclipsed by classes that took precedence during resolution. This allows
VerifierDeps::VerifyInternalClasses to succeed when a class redefined
now was also redefined when the deps were being created because the
class was treated as external and dependencies on it were recorded.

Test: m test-art-gtest-verifier_deps_test
Change-Id: I7bcbe947c3c74535306e6dbb5b288076f320a7bc

0 files changed, 0 insertions, 0 deletions