* Use "itimer" instead of alarm when available for higher resolution
  timing in setTimer/getTimer.

* Determine more pthread targets which may allow SIGALRM to be used
  beyond Linux for multiple timer instances.

* Optional support for Posix timers rather than alarm or setitimer
  for getTimer/setTimer when available on target platform.

* Introduce "stream" support for Pipe.

* Manual and overview documentation.

* GNU PTH specific source tree.

* use namespace when available

* redo exception handling
