PR c++/43108
	* typeck.c (cp_build_binary_op): Adapt mixed complex/non handling from
	C build_binary_op.
	* cp-tree.h (WANT_VECTOR_OR_COMPLEX): Rename from WANT_VECTOR.
	* cvt.c (build_expr_type_conversion): Allow COMPLEX_TYPE.

From-SVN: r156874