rs6000.c (rs6000_handle_altivec_attribute_tree): Report errors for vector types with invalid component types.

	* rs6000.c (rs6000_handle_altivec_attribute_tree): Report errors
	for vector types with invalid component types.
testsuite:
	* gcc.dg/altivec-types-1.c: New test.
	* gcc.dg/altivec-types-2.c: New test.
	* gcc.dg/altivec-types-3.c: New test.
	* gcc.dg/altivec-types-4.c: New test.
	* g++.dg/ext/altivec-types-1.C: New test.
	* g++.dg/ext/altivec-types-2.C: New test.
	* g++.dg/ext/altivec-types-3.C: New test.
	* g++.dg/ext/altivec-types-4.C: New test.

Co-Authored-By: Janis Johnson <janis187@us.ibm.com>

From-SVN: r92154