timer functions for non-kernel

[Jani Monoses]

  > mlqueue should also run without a timer in its none timeslicing
> mode. You can configure this with CYGSEM_KERNEL_SCHED_TIMESLICE.
> 

I know; what I was trying to say is that to me CYGPKG_KERNEL implies threaded while 
drv_api implies non-threaded apps, but nothing about interrupts. Certainly, use of one or 
the other is an indication of whether ints will be used or not, but it is not an enforced 
rule. Your points that even threaded apps can run w/o interrupts seem to emphasize this 
distinction even more.

Anyway I will use the functions I sent, since they make sense for the project I am working 
on, I just thought they would be generally useful.

Jani