Get rid of the copies of the opcode table pointers.

Get rid of the copies of the opcode table pointers.

This inclduded fixing all the accessor functions to refer to the
global ones defined in InstrUtils.[ch] instead of taking separate
"table pointer" arguments.

This did end up adding a few more truly global references to some of
the code paths, particularly when performing dex optimization, so I
went ahead and measured the time to do a cold first-boot both before
and after the change (on real hardware). The times were identical (to
one-second granularity), so I'm reasonably comfortable making this
change.

Change-Id: I604d9f7882bad4245bb11371218d13b06c3a5375