Patch to implement minimum password length for SET PASSWORD (MINPWDLEN.FIX)

SET
	ECO120	LJKilgallen		25-Oct-1982
		MODULE: SETPWD
		Implement minimum password length for SET PASSWORD in VMS 3.0.

    If System logical name SET_PASSWORD_MINIMUM_LENGTH is defined to be a
decimal number, the new password must have at least that many characters.

    Note that this patch sets a minimum only for the SET PASSWORD command.
The AUTHORIZE utility can still be used for setting shorter passwords
(by those with suitable privilege).

    If a VMS system is to be networked with a RSTS system, it may be bad
to set a minimum length greater than 6 characters.  Version 1.1 of
DECnet/E will not support passwords longer than 6 characters.