[gomp4] Compiler side of the cancellation support

[Jakub Jelinek]

On Tue, Jul 09, 2013 at 10:12:30AM -0700, Richard Henderson wrote:
> > Queuing this patch until we have a library implementation.
> 
> I've committed the patch, so that I can more easily work on the library
> implementation.

Ok, thanks.

> There was one minor patch conflict that needed resolving.

In expand_omp_single, right?  Yeah, the
http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00139.html
patch touched the line immediately above what the cancellation patch
changed.

	Jakub