add hazard vectors to Regfiles

add hazard vectors to Regfiles
the reason for adding it to Regfiles is because both In-Order and OoO
need global hazard vectors.

in the case of In-Order the hazard vector bits are set directly by the
Issue Engine.

in the case of Out-of-Order the vector bits are set by way of an
amalgamation (Great Big Or Gate) of the columns from the DMs

in either case the vectors are needed, so might as well be added to Regfiles