rs6000.c: Include params.h

        * config/rs6000/rs6000.c: Include params.h
        (optimization_options): Set max-grow-copy-bb-insns default to 16.
        (bdesc_2arg): Delete vpkuhss and vpkuwss.
        * config/rs6000/altivec.md (UNSPEC_VPKUHSS): Delete.
        (UNSPEC_VPKUWSS): Delete.
        (altivec_vpkuhss): Delete.
        (altivec_vpkuwss): Delete.
        * config/rs6000/rs6000.md (plus_eqsi): Remove optimize_size from
        final condition.
        (neg_eq0<mode>): Remove final condition.
        (neg_eq<mode>): Remove condition and split-condition.

From-SVN: r106479