Hi,

this patch adds initialization in zero_iter_bb of counters introduced in 
expand_omp_for_init_counts.

This removes the need to set TREE_NO_WARNING on those counters.

Build on x86_64 and reg-tested with gomp.exp and target-libgomp c.exp.

OK for trunk, if bootstrap and reg-test on x86_64 succeeds?

Thanks,
- Tom