* kinit.c: Nicer usage message. Better checking for illegal

* kinit.c: Nicer usage message.  Better checking for illegal
options.  Do not output error when doing Kerberos 4 if we will be
trying 524 afterwards.  Add hooks for future support for
specifying the Kerberos 4 cache name.  Fix GET_PROGNAME macro to
properly return program name under Win32.  Re-indent, turning
spaces that should be tabs into tabs.

* kinit.M: Document new Kerberos 4 kinit behavior.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@12049 dc483132-0cff-0310-8789-dd5450dbe970