test for the <caca0.h> emulation layer.

which case it is massively useless.

from an alternate directory (they failed to find common.h).

* Added a test for textfile loading.

contain development tools that are only useful to libcaca developers.

onto the other with an optional mask.

* Bitmap gamma test example. Of       ,---.        /""`_,'
    course it does not work yet,        |    `\``""-;   /
    because some dirty old pig          \   /`\\     ';'
    implemented a cucul_powf()        .')   |     __   \
    function that only works         / (`  /     /(O\. _|
    with integer exponents.       .-`|  `"`      `    .-\_
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    VIEUX PORC !         .-'`            .           '-._;_._.J
                     .-'`                               `.-'` 
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               .'           U                  '- ._.-'
             /`          C                         /
            /         y                           |
      ._   ;       J                         |    |
       )).-|                     |           |    /
      (/`.-|                \    \           /  .;
      ( (_)|                 |    \         ; .' |
       '--';                 |    `\       / /   |
            \                |      `\    /.'   /
             \               /        ;  |`\   |
              '.           .'      _.-|  |  |  |
                '-.     .-';_"---'`.__|  |  |  \
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                        `''--.___\\   \__\\

good to have something to start with.

of unicode letters) is now separated from the higher level rendering and I/O
(that is, libcaca). This commit totally breaks the API, but once everything
is polished I will think about source-level backward compatibility. Most
drivers are broken, but X11 still sorta works.

  The new design is much more object-oriented and allows having several
active renderers at the same time, changing renderers on the fly, and more
important, having no renderer at all (useful for converters, or when you
want to do your own renderer).

  And in case you are still wondering, the libcucul acronym has "Unicode"
because I want to support at least a subset of Unicode. There are awesome
glyphs in it, including the ones inherited from Codepage 437 such as
"gray 25%" that are used in DOS and Win32 ANSI art.

a future shared library.

+ Extracted the colour test from examples/demo.c.

+ Win32 cross-compilation script.

+ Small event lister, similar to X11's xev.
  * src/graphics.c:
    + If possible, disable autorepeat in the X11 driver.
  * src/io.c:
    + Implemented CACA_EVENT_MOUSE_RELEASE in all drivers.
    + Button number support in CACA_EVENT_MOUSE_{PRESS,RELEASE}.

+ Moved spritedit to the test/ directory, because it is not mature enough.
  * libcaca.spec debian/control debian/rules:
    + Do not install caca-spritedit.

+ Trivial saturation/value rendering test.

+ Optimised S-Lang palette generator.
  * src/graphics:
    + Removed the S-Lang palette generator and replaced it with the tables
      generated by optipal.

+ Added a test directory for test programs.
  * test/dithering.c:
    + The value/saturation dithering example.

to examples/.

+ Placeholder for our upcoming sprite editor.
  * src/Makefile.am data/Makefile.am:
    + Use AM_CPPFLAGS, not target_CPPFLAGS, so that automake-1.5 can be used.

+ Moved optimization flags and warning triggers here.
    + Updated the snapshot timestamp.

+ Implemented ee_fill_triangle().
  * test/demo.c:
    + Triangle demo.

+ Added more compiler warning flags.
  * test/demo.c:
    + Small demo for libee.