bug #83 - move test of disabled land objects into AddObjects
Engine:
* Temporary fix to log file writing when running from command line (standalone demo/savegame playback)
Frontend:
* Added a button to the settings menu to associate demos and savegames (.hwd/.hws) with the engine in Windows Explorer and other programs such as web browsers (Win32 only)
Set ammo to amNothing after using up the current ammo. This should reduce noob fail where they blow themselves up w/ bazooka.