* io.c (resolve_tag): Warn on non-default kind for NUMBER,
	NEXTREC, RECL, NAMED, OPENED and PENDING I/O specifiers.

	* gfortran.dg/io_constraints_11.f90: New file.
	* gfortran.dg/io_constraints_12.f90: New file.
	* gfortran.dg/io_constraints_13.f90: New file.

From-SVN: r211323