call.c (perform_overload_resolution, [...]): Use OVL_P; remove redundant TEMPLATE_DEC...

call.c (perform_overload_resolution, [...]): Use OVL_P; remove redundant TEMPLATE_DECL checks.

2019-05-15  Paolo Carlini  <paolo.carlini@oracle.com>

	* call.c (perform_overload_resolution, build_new_method_call_1):
	Use OVL_P; remove redundant TEMPLATE_DECL checks.
	* decl.c (grokfndecl): Likewise.
	* mangle.c (write_expression): Likewise.
	* parser.c (cp_parser_template_id): Likewise.
	* pt.c (resolve_overloaded_unification, type_dependent_expression_p):
	Likewise.
	* search.c (build_baselink): Likewise.
	* tree.c (is_overloaded_fn, dependent_name, maybe_get_fns): Likewise.

From-SVN: r271211