[CentOS] php-mcrypt extension

I see that there are a plethora of php extensions available as rpms,
from the centos repositories, but not the php-mcrypt extension. I'm
trying to stick to an rpm-only system and haven't found one that
provides this, yet, for my 4.4 system.

Is there any plan to add this to the repository in the near future (if
at all)? Does anyone know where I can get it, otherwise? I see there
is one for FC4. Perhaps I can do a --rebuild on it?
-- 
        -ste