* configure.in: Turn on haifa by default for the PA.

        * configure: Rebuilt.
        * pa.c (override_options): Accept -mschedule=7200 option.
        (pa_adjust_cost): No longer need to scale costs for newer
        processors.
        * pa.h (enum processor_type): Add PROCESSOR_7200.
        * pa.md: Revamp scheduling parameters to work better with
        haifa.  Add scheduling parameters for the 7200.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@14850 138bc75d-0d04-0410-961f-82ee72b054a4