More changes from ian@cygnus.com to support testing

	More changes from ian@cygnus.com to support testing

> Fri Mar 24 15:04:25 1995  Ian Lance Taylor  <ian@cygnus.com>

	* krcp.c (forcenet): New global vraiable.
	(main): Accept -D and -N arguments.  Pass Kerberos realm to remote
	rcp execution.
	(hosteq): If -N specified, always return 0.
	* rcp.M: Document -D and -N.
	* krshd.c (ARGSTR): Add "P:" to KERBEROS version.
	(kprogdir): New global variable.
	(main): Handle -P.
	(path): Remove global variable.
	(path_rest): Remove explicit size.
	(envinit): Use 0 instead of path.
	(PATHENV): define.
	(doit): Use kprogdir variable instead of KPROGDIR macro when
	setting path.  Build path in allocated memory rather than using a
	fixed size array.  If the command starts with "rcp ", force use of
	kprogdir/rcp if it exists.
	* krshd.M: Document -P.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@5429 dc483132-0cff-0310-8789-dd5450dbe970