rnd-20051215-1-src

* added missing configuration settings for the following elements:
  - EL_TIMEGATE_SWITCH		(time of open time gate)
  - EL_LIGHT_SWITCH_ACTIVE	(time of light switched on)
  - EL_SHIELD_NORMAL		(time of shield duration)
  - EL_SHIELD_DEADLY		(time of shield duration)
  - EL_EXTRA_TIME		(time added to level time)
  - EL_TIME_ORB_FULL		(time added to level time)
* added "wind direction" as a movement pattern for custom elements
* added initial wind direction for balloon / custom elements to editor
* added functionality for EL_BALLOON_SWITCH_NONE to R'n'D game engine