[PR88420] Fortran OpenACC "Clause SEQ conflicts with INDEPENDENT"

[PR88420] Fortran OpenACC "Clause SEQ conflicts with INDEPENDENT"

The Fortran front end declares that the OpenACC "Clause SEQ conflicts with
INDEPENDENT".  While that combination doesn't make too much sense indeed, it's
still valid; these are orthogonal concepts.

	gcc/fortran/
	PR fortran/88420
	* openmp.c (resolve_oacc_loop_blocks): Remove "Clause SEQ
	conflicts with INDEPENDENT" diagnostic.
	gcc/testsuite/
	PR fortran/88420
	* gfortran.dg/goacc/loop-1-2.f95: Update.
	* gfortran.dg/goacc/loop-1.f95: Likewise.

From-SVN: r266920