rs6000-c.c (altivec_resolve_overloaded_builtin): Implement -maltivec=be for vec_insert and vec_extract.

gcc:

2014-01-13  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
	Implement -maltivec=be for vec_insert and vec_extract.

gcc/testsuite:

2014-01-13  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.dg/vmx/insert.c: New.
	* gcc.dg/vmx/insert-be-order.c: New.
	* gcc.dg/vmx/extract.c: New.
	* gcc.dg/vmx/extract-be-order.c: New.

From-SVN: r206590