gcc/c-family:
        * c-common.c (same_scalar_type_ignoring_signedness): Delete.
        (vector_types_compatible_elements_p): New function.
        * c-common.h: (same_scalar_type_ignoring_signedness): Delete
	declaration.
        (vector_types_compatible_elements_p): Declare.
gcc/c:
        * c-typeck.c (build_binary_op): Use vector_types_compatible_elements_p.
gcc/cp:
        * typeck.c (cp_build_binary_op): Use vector_types_compatible_elements_p.
gcc/testsuite:
        * c-c++-common/opaque-vector.c: New test.

From-SVN: r202364