Unload% ends the level instantly on Dustmod type levels

[cmann1]

It seems like the problem is that on non-normal maps, was_run is always set to false, which is used to check for unload% (Skyhawk)

[msg555]

Updated so that unload triggers for Dustmod maps if the player would have otherwise been unloaded (although as a reminder Dustmod maps prevent the player from truely unloading). This also makes oob is now playable