back to the libcucul merge.

currently dirty rectangles.

inner implementation still only handles one dirty rectangle, but this way
we can prepare supporting applictions for the future.

on Win64, including the .NET projects.

lesson to you: unit tests are good.

that anything outside the dirty rectangle is guaranteed to be unchanged, but
we currently mark far too many cells as dirty. This must be optimised.

Dirty rectangles are an upcoming optimisation that will tell the output
drivers which portion of the canvas has been really modified since the
last blit.

play with the Windows port, there is a 90-day evaluation version
available for free on the Microsoft website.

frame separator. Not extremely robust yet.

code for clarity.

Fixes ticket #51.

* Use RETVAL_STRINGL instead of RETURN_STRINGL in function caca_export_string

rely on .la files for library dependencies.

logo filename in the example

error message when this does not work

when export fails, too

new version in PHP. it seems to work, and is more flexible than the
getopt() found in PHP 5.3+.