Fixes ticket #51.

split is rendered moot by the plugin system: when enabled, binaries do
not link directly with libX11 or libGL. I hope this is a step towards
more consisteny and clarity.

* Synchronise parameter types in the C++ bindings with the C API.

far better for error checking.

* Use size_t and ssize_t where appropriate.

prototypes. As they are equivalent, this does not break the ABI.

<cucul.h> will provide the C99 types, even if libcaca has been installed.
  * Rename what's left of "common.h" to "stubs.h".
  * Remove all references to erroneous <inttypes.h> from source files.

* Fix the sprite import/export example.

without using environment variables..
  * Implement caca_get_display_driver() to return the current display's
    output driver.
  * Add a simple example program to test caca_create_display_with_driver().

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* Autodetect zzuf in the configure step. It might become handy.

* Renamed caca_refresh() into caca_display() which makes more sense.
  * Optimised gl_bgpal by directly storing floats instead of doing the
    conversion at runtime.
  * Handle resizing in cucul_set_size() and try to keep as much information
    as possible from the previous canvas.
  * Moved most global variables into cucul_t or caca_t contexts.
  * Moved time.c into libcaca.

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.

+ Use Space to pause demos, Esc to quit.

+ Moved statusbar and help menu handling in separate functions.

+ Proper aspect ratio support.
    + Finer zoom support.
    + Handle mouse clicks as next/prev picture command.
    + Removed useless iterations in draw_checkers().

+ When resizing under X11, copy the old pixmap to the new one.
  * examples/cacaview.c:
    + Resizing support.

+ Renamed caca_set_title() to caca_set_window_title().
    + Implemented caca_get_window_width() and caca_get_window_height().
  * examples/cacaview.c:
    + Set the window title to cacaview.

+ Added the CACA_EVENT_RESIZE event.
    + Added caca_get_mouse_x() and caca_get_mouse_y().
  * src/graphics.c:
    + Window resize handling in the X11 driver.
  * examples/aafire.c:
    + Fixed a bad assumption in the resize handling code.

+ Check for sys/times.h and unistd.h.
    + Added calls to AC_C_CONST and AC_C_INLINE.
  * src/time.c src/graphics.c:
    + Fixes for MSVC compilation warnings.
    + Additional sanity checks in the Win32 driver.
  * src/caca.c:
    + Use raw()/noraw() in the curses driver instead of cbreak().
  * msvc/libcaca.sln:
    + Added an MSVC solution.
  * examples/aafire.c:
    + Slightly reduced the maximum cacafire framerate.

+ Implemented caca_set_title() for X11 and Win32.
  * examples/cacaview.c:
    + Use caca_set_title() to set the window title to "cacaview".

+ Win32 cross-compilation script.

+ Renamed cacacirc to cacamoir.
  * libcaca.spec debian/ doc/:
    + Added cacamoir to the distributed files.

+ Bigger metaballs, less metaballs.
    + Rotating palette.
  * examples/cacaplas.c:
    + Slightly decreased speed.
  * examples/cacacirc.c:
    + New effect.

+ Look for Sleep in -lkernel32.
  * examples/cacaview.c:
    + Use caca_wait_event() instead of usleep()/caca_get_event().

+ Native win32 port.

+ Updated credits.
  * NEWS:
    + Forthcoming 0.8 news.

+ Check for -lm.
  * examples/cacaplas.c:
    + New demo, cacaplas, that displays a colour plasma.

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

+ 24 metaballs instead of 5, but smaller.
    + Zoom the bitmap to make more use of the screen area.

+ Crop the palette so that it looks a bit more like metaballs.
  * AUTHORS THANKS:
    + Credited Jylam and Jan Hubicka.

+ Huge coding style overhaul.
    + Display 5 metaballs instead of 3.
    + Generate the palette instead of having a static one.
    + Use a 256x256 back buffer for more smoothness.

+ Metaballs demo program from Jean-Yves Lamoureux <jylam@lnxscene.org>.

+ caca_get_event() and caca_wait_event() now accept a mask as an argument
      in order to select events.