nvptx, libgfortran: Switch out of "minimal" mode

nvptx, libgfortran: Switch out of "minimal" mode

..., in order to enable (portions of) Fortran I/O, for example.

libgfortran/ChangeLog:

	* configure: Regenerate.
	* configure.ac: No longer set LIBGFOR_MINIMAL for nvptx.

libgomp/ChangeLog:

	* testsuite/libgomp.fortran/target-print-1.f90: Adjust.
	* testsuite/libgomp.fortran/target-print-1-nvptx.f90: Remove.
	* testsuite/libgomp.oacc-fortran/print-1.f90: Adjust.
	* testsuite/libgomp.oacc-fortran/print-1-nvptx.f90: Remove.
	* testsuite/libgomp.oacc-fortran/error_stop-2.f: Adjust.
	* testsuite/libgomp.oacc-fortran/stop-2.f: Likewise.

Co-authored-by: Andrew Stubbs <ams@codesourcery.com>