Function _CompareMenuSequence

_CompareMenuSequence is used in sorting the menu options into the sequence order

Package: awl\MenuSet
Copyright: Catalyst IT Ltd, Morphoss Ltd http://www.morphoss.com/
License: GNU GPL v2 or later
Author: Andrew McMillan andrew@mcmillan.net.nz
Located at MenuSet.php

Parameters summary
`objectref`	`$a`	The first menu option
`objectref`	`$b`	The second menu option

Return value summary
`integer`	( $a == b ? 0 ( $a > b ? 1 : -1 ))