reflection: Add new 1.8 AnnotatedElement methods and tests

Also:
* Bump the size of the Class vtable size since 3 new virtuals were
added to java.lang.Class
* Refactor Method#isDefault test into a separate file within 048 test.

Change-Id: I8420a4d208bb60874a9cf996766313c7d5058c45
18 files changed