* lto.c (hash_canonical_type): Drop hashing of TYPE_STRING_FLAG.
	* tree.c (gimple_canonical_types_compatible_p): Drop comparsion of
	TYPE_STRING_FLAG.

	* gfortran.dg/lto/bind_c-2b_0.f90: New testcase
	* gfortran.dg/lto/bind_c-2b_1.c: New testcase

From-SVN: r224252