I've applied this patch which backports a change in the way that seq and
auto are parsed in the c front end from trunk to gomp4.

Next up, I'm preparing a patch to remove *_omp_positive_int_clause from
the c and c++ front ends in gomp4. That function is used to parse
num_threads, num_gangs, num_workers and vector_length in gomp4. But
support for those clauses are already present in trunk. I'll post more
details with the patch later.

Cesar