Summary: improvements of TraceMethodHandles for JSR292
Reviewed-by: never, twisti

Summary: improvements of frame_describe
Reviewed-by: never, twisti

Reviewed-by: kvn, jrose, twisti

Reviewed-by: never, bdelsart

7110489: C1: 64-bit tiered with ForceUnreachable: assert(reachable(src)) failed: Address should be reachable
Reviewed-by: kvn, iveresov, twisti

Reviewed-by: kvn

Summary: check for single stepping when dispatching invokes from method handles
Reviewed-by: coleenp, twisti, kvn, dsamersoff

Reviewed-by: kvn, jrose

Reviewed-by: twisti, jrose