* getpty.c: Make pty_getpty() into ptyint_getpty_ext(), which has

	* getpty.c: Make pty_getpty() into ptyint_getpty_ext(), which has
	an extra argument that determines whether to call grantpt() and
	unlockpt() on systems that support it.  The new pty_getpty() will
	simply call the extended version.  This is to support some
	wackiness needed by pty_paranoia.c tests.

	* pty-int.h: Add prototype for ptyint_getpty_ext().

	* pty_paranoia.c: Add rant about ptys and quirks therein.  Needs
	to be updated somewhat.  Add some more paranoia for the case where
	we actually succeed in opening the slave of a closed master and
	then succeed in opening the same master.  This program will get
	rewritten at some point to actually see what things result in EOFs
	and under what conditions data will actually get passed between
	master and slave.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@13243 dc483132-0cff-0310-8789-dd5450dbe970