Fortran: fix checks for STAT= and ERRMSG= arguments of SYNC ALL/SYNC IMAGES

Fortran: fix checks for STAT= and ERRMSG= arguments of SYNC ALL/SYNC IMAGES

gcc/fortran/ChangeLog:

	PR fortran/99351
	* match.c (sync_statement): Replace %v code by %e in gfc_match to
	allow for function references as STAT and ERRMSG arguments.
	* resolve.c (resolve_sync): Adjust checks of STAT= and ERRMSG= to
	being definable arguments.  Function references with a data
	pointer result are accepted.
	* trans-stmt.c (gfc_trans_sync): Adjust assertion.

gcc/testsuite/ChangeLog:

	PR fortran/99351
	* gfortran.dg/coarray_sync.f90: New test.
	* gfortran.dg/coarray_3.f90: Adjust error messages.