This reverts commit f5c6b070.

* To make future update easier, we keep using microOp instead of
separate fields

Rename now provides vectors indicating whether there're matches between lsrc1/lsrc2/lsrc3/ldest
and previous instructions' ldest. Dispatch1 updates uops' psrc1/psrc2/psrc3/old_pdest with
previous instructions pdest. This method optimizes rename' timing.

To optimize timing, move redirect logic later