API GetNumDungeonMapLevels

__NOTOC__
This is somewhat of a misnomer as it does not directly return the number of levels on the map. Rather, it returns an array containing the sub map numbers (levels) available on the current world map. The array will have one entry for each level on the current map, with each value indicating an "area" or "submap" number. To get the count of levels/submaps, examine the size of the returned array (#levels)
 levels = GetNumDungeonMapLevels();
== Parameters ==
:none
== Returns ==
;levels : array of Integers - Array containing each sub map number
== Details ==
Return value is an array where each entry represents the number of an option in the drop down for 'areas' or 'submaps' within a given zone. The total number of levels/areas/submaps is represented by the number of entries in the array. Current selected option is available through GetCurrentMapDungeonLevel.
==Patch changes==
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