Mach4/GNU Mach Features

[Brent Fulgham <bfulgham@xpsystems.com>]

I was reading some of the notes on the Mach 4 website linked
from the GNU Mach web page.  
(http://www.cs.utah.edu/flux/mach4/html/Mach4-proj.html)

Does GNU Mach contain the "new features" (circa 1997) listed
on this page as already being incorporated into Mach?  For 
example, the most-recent HP-PA version of Mach 4 supported:

- Migrating threads
- Kernel Activations
- Presentation/Interface IPC

All of these were shown in the literature to have positive
impacts on memory use and overall performance.

Thanks,

-Brent