pTools Process Credential reporting utility (pcred)

Based off the Sun Microsystems pcred utility.  Reports process credentials
of the process given on the command line.

Usage:
	pcred { pid } ...

NOTES:
	Group listing is based off ruid of process (ie the user who
		actually ran the proccess), not the euid of the
		process.

		- This info is in /proc/pid/status as well (9-16-01)


	Consistant with Sun implementation, if uids or gids are different
		they are enumerated in the output

	All data reported can be found in /proc/pid/status file

	Security is handled by the OS

	If an open() succeeds then report the info we need to report

TODO:
	- Fix /* for() */ comment at end of while loop
