X86_64 jump tables for PackedSwitch

Implement PackedSwitch using a jump table of offsets to blocks.

Bug: 24092914
Bug: 21119474
Change-Id: I83430086c03ef728d30d79b4022607e9245ef98f
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
4 files changed