pa.h (REGNO_OK_FOR_INDEX_P, [...]): Check register number and that reg_renumber is nonzero before using it.

	* pa.h (REGNO_OK_FOR_INDEX_P, REGNO_OK_FOR_BASE_P, REGNO_OK_FOR_FP_P):
	Check register number and that reg_renumber is nonzero before using it.

From-SVN: r92164