initial module hiding

raw rename

* implement a "render cache", sort of our own slow display list.

* use it when drawing the map. while this will perfectly sort
  by texture and thus give a nice speedup in itself (hardware),
  its not the actual goal.

checking in some refactored code

the beginning of a (very simple) canvas widget

nuke unused sc_newbie_scorn.png/jpg, replace some pngs with uglier, much smaller, jpegs

- reworked texture uploading to be much more fanciful and obey
  card/driver limits.
- moved texture creation in MapWidget and MapMap out of the drawing
  path to accomodate texture-size-limited configs (there is dire need
  for a kind of pre-draw-hook).
- added an inactive graphics for buttons

- changed most db accesses to be asynchronous
  (this was way more difficult than anticipated)
- face id allocation is still synchronous (and has to be as long as
  we want to allow multiple instances running in parallel)
- facemap is cached locally, so subsequent accesses are fast
- the alternative would be to store faceids, not tileids, in the
  in-memory map, but then mapcache tiles are non-displayable
  unless the server already sent them.
- tile loading and map cache load/store are fully asynchronous
- replaced 32x32 dialogue and noface images by 64 bit versions
- properly scale special dialogue/noface textures to tilesize

- slightly cleaned up and "outsourced" components
- completely rewrote keybind bindings
  - not functional yet
  - buggy a shell
  - hits perlbug

add dialogue indicator support

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fixed the image borders

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the big rename

Get rid of cairo completely (yay!) and of ft2 factually (still need the
library as it included pangofc), by introducing a custom pango opengl
renderer.

Text rendering now no longer requires the distinction between rgba and
grayscale modes, requires much less texture space and memory, and is
faster on accelerated hardware (and possibly with software rendering, too).

All at the cost of only 1200 lines or so.

better gl extension management, play around with premultiplied alpha, without reaching an absolutely correct solution

unbundled CFClient::Texture

bugfix

support multiple fonts, add dejavu sans and sans mono fonts (bitstream++)

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add typemap and bold/?italic fonts