re PR lto/65378 (Tweak to wording of -Wodr message)

	PR lto/65378
	* ipa-utils.h (warn_types_mismatch): Update prototype.
	* ipa-devirt.c (odr_types_equivalent_p): Add loc1/loc2
	parameters.
	(type_mismatch_p): New function.
	(warn_types_mismatch): Reorg to work better on non-C++ types.
	(odr_types_equivalent_p): Add loc1/loc2 parameters.
	(add_type_duplicate): Update.
	* lto-symtab.c (warn_type_compatibility_p): Fix call of
	odr_or_derived_type_p.
	(lto_symtab_merge_decls_2): Update call of warn_types_mismatch.

From-SVN: r224248