8139163: InstanceKlass::cast passes through NULL
Summary: Reduce raw (InstanceKlass*) casts and InstanceKlass::cast, which no long allows null
Reviewed-by: twisti, kbarrett

8080775: Better argument formatting for assert() and friends
Reviewed-by: kbarrett, pliden

8135085: Change Method::_intrinsic_id from u1 to u2
Summary: Convert Method::_intrinsic_id from u1 to u2 to expand id range over 255.
Reviewed-by: coleenp, iklam, jiangli
Contributed-by: aleksey.shipilev@oracle.com

8074119: [AARCH64] stage repo misses fixes from several Hotspot changes
Summary: add shared code changes from 8059606, 8069230, 8068976, 8068977, 8072911 and 8071805
Reviewed-by: aph, kvn

8068054: AARCH64: Assembler interpreter, shared runtime
Summary: add src/cpu/aarch64/vm/* interpreter, shared runtime files.
Reviewed-by: kvn, roland, coleenp, twisti