Move FindDexMethodIndexInOtherDexFile into ArtMethod.

Move FindDexMethodIndexInOtherDexFile out of MethodHelper into ArtMethod in
preparation for the removal of MethodHelper.
Tidy ClassLinker::ResolveMethod so that all exception paths flow through the
exception pending assertion.
Tidy artQuickResolutionTrampoline to be more explicit about variable names and
only update the dex cache if necessary.

Change-Id: I3e48eb4f6c1291533067c1b53efe90c53bfcaea8
7 files changed