* gfortran.h (gfc_code): Split backend_decl field into cycle_label
	and exit_label fields.
	* trans-openmp.c (gfc_trans_omp_do): Assign to new fields
	individually.
	* trans-stmt.c (gfc_trans_simple_do): Likewise.
	(gfc_trans_do): Likewise.
	(gfc_trans_do_while): Likewise.
	(gfc_trans_cycle): Use cycle_label directly.
	(gfc_trans_exit): Use exit_label directly.

From-SVN: r161473