call.c (build_op_delete_call, [...]): Use Use DECL_SOURCE_LOCATION and "%qD" in inform and pedwarn instead of "%q+D".

2015-07-28  Paolo Carlini  <paolo.carlini@oracle.com>

	* call.c (build_op_delete_call, convert_like_real, build_over_call):
	Use Use DECL_SOURCE_LOCATION and "%qD" in inform and pedwarn instead
	of "%q+D".
	* constexpr.c (explain_invalid_constexpr_fn): Likewise.
	* decl.c (duplicate_decls): Likewise for warning/warning_at.
	* except.c (maybe_noexcept_warning): Likewise.
	* friend.c (make_friend_class): Likewise for inform.
	* mangle.c (mangle_decl): Likewise for warning/warning_at.
	* method.c (process_subob_fn, walk_field_subobs,
	maybe_explain_implicit_delete): Likewise for inform.
	* parser.c (cp_parser_lambda_introducer): Likewise.
	* pt.c (check_specialization_namespace,
	maybe_process_partial_specialization): Likewise for permerror.
	(redeclare_class_template): Likewise for inform_n.
	(coerce_template_parms, tsubst_copy_and_build): Likewise for inform.
	* search.c (check_final_overrider): Likewise.
	* semantics.c (process_outer_var_ref): Likewise.

From-SVN: r226308