rnd-20091218-1-src

rnd-20091218-1-src
* fixed EMC style pushing animations in the R'n'D graphics engine (when
  using ".2nd_movement_tile" for animations having start and end tile)
* for this to work (look) properly for two-tile pushing animations with
  non-black (i.e. opaque) background, the pushing graphics drawing order
  was changed to first draw the pushed element, then the player (maybe
  this should be controlled by an ".anim_mode" flag yet to be added)
* added searching for template level (file "template.level") not only
  inside the level set directory, but also in above level directories;
  this makes is possible to use the same single template level file
  (placed in a level group directory) for many level sub-directories