SDL framebuffer cache, avoid redrawing unchanged tiles
Fix rendering of unicode characters
Temporarily disable caching when GFX tiles are enabled
Reenabled caching with GFX tiles
added data/credits and data/motd to recursive copy, as install was failing; fixed copy of fontdata.json to DATA_PREFIX
just a few more things we can ignore
Applies Parkour and Bad Knees to fence-climbing

Fixes #9334.
fixed issue where tileset loading was only taking place in current directory, even if prefix was specified
Increases spawn chance for boats & pump

Because a world with the boat mod ought to have boats lying about, no?
Fix definition of evac center.

Somehow the mapping of "1" to "t_window_boarded" has been lost.
It was not reported by the game because "fill_ter" was set and used instead.
That means all the boarded up windows appeared as t_floor instead.
FEMA camp: create t_dirt floor, not t_dirtfloor

t_dirt is outside, whereas t_dirtfloor is an inside terrain.
Merge remote-tracking branches 'dda/pr/9330', 'dda/pr/9335', 'dda/pr/9336', 'dda/pr/9340' and 'dda/pr/9341' into dda-master

* dda/pr/9330:
  Reenabled caching with GFX tiles
  Temporarily disable caching when GFX tiles are enabled
  Fix rendering of unicode characters
  SDL framebuffer cache, avoid redrawing unchanged tiles

* dda/pr/9335:
  Applies Parkour and Bad Knees to fence-climbing

* dda/pr/9336:
  fixed issue where tileset loading was only taking place in current directory, even if prefix was specified
  just a few more things we can ignore
  added data/credits and data/motd to recursive copy, as install was failing; fixed copy of fontdata.json to DATA_PREFIX

* dda/pr/9340:
  Increases spawn chance for boats & pump

* dda/pr/9341:
  FEMA camp: create t_dirt floor, not t_dirtfloor
  Fix definition of evac center.
Remove unused variables.