pTools Process Tree utility (ptree)

Based off the Sun Microsystems ptree utitlity.  Prints a tree view of the
process running on the system in relation to the command line arguments.  If
a user is given all processes owned by that user are displayed.  If a PID is
given the processes in direct relation are displayed.  An argument of all
digits is taken to be a PID.  The default action is all processes on the 
system.

Usage:
	ptree < pid | username >

NOTES:
   Initial Implementation Notes
	- Exact duplicate of ptree under Solaris

	- Emphasis on data structures and output functions
		- Easy to add functionality later if concentration
		on these parts

   Redhat Notes
   	- procps-2.0.7 RPM and SRPM will not allow ptree to be compiled.
	   These do not provide the necessary header files
	- Install procps-2.0.7.tar.gz by hand in order for ptree to
	   compile and execute correctly

