* pa.md (zero_extendqihi2): No need to explicitly set a length,
        the defaults are correct.
        (zero_extendqisi2, floatsisf2, floatsidf2): Likewise.
        (floatdisf2, floatdidf2, fix_truncsfsi2): Likewise.
        (fix_truncdfsi2, fix_truncsfdi2, fix_truncdfdi2): Likewise.

From-SVN: r5181