Hello

This is a revised version of the patch for the 'present' modifier for 
OpenMP. Compared to the first version, three improvements have been made:

- A bug which caused bootstrapping with a '-m32' multilib on x86-64 to 
fail due to pointer size issues has been fixed.
- The Fortran parse tree dump now shows clauses with 'present' applied.
- The reordering of OpenMP clauses has been moved to 
gimplify_scan_omp_clauses, where the other clause reordering rules are 
applied.

Thanks

Kwok