Fix JNI GetMethodID on interfaces

The GetMethodID call was only searching through methods declared by
classes and superclasses.  If you passed it an interface class and
asked for a method declared in a superinterface, the call would fail.
We now have separate code for handling lookups on interfaces.

This also refactors some similar code in the interface method resolver.

Bug 3329492

(Cherry-pick from dalvik-dev)

Change-Id: Icaf744b9e75a1fd6d99f47281002cc6b3c36e368
5 files changed