* default.exp: Add code to handle setting of PASS to constrain

	* default.exp: Add code to handle setting of PASS to constrain
	multipass testing to particular passes.  dejagnu-1.3 doesn't have
	support for PASS, so we kludge it here, though some later versions
	handle it by themselves.
	(krb_exit): Add new proc to clean up on exit.
	(kinit): Remove "expect \r" since "expect eof" will drain the pty
	buffer properly anyway.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@12583 dc483132-0cff-0310-8789-dd5450dbe970