caca_create_display is the same as caca_create_display_with_driver
with a NULL driver, so we can simply call caca_create_display_with_driver.

This breaks loading on Linux, and presumably on other platforms

The Minitest alias was added 14 years ago in minitest 2.12.0, they
got swapped in 2013 in 5.0.0, and the MiniTest alias inow seems to
no longer exist even if I could not find when it went away.

Patch from Fedora
https://src.fedoraproject.org/rpms/libcaca/blob/rawhide/f/libcaca-0.99.beta20-c99.patch

This will hopefully fix the OS X ruby package.

This fixes the path to source files in some unit tests and allows
to get rid of a few duplicate lines.

caca_wherey(), in order to match the old <conio.h> naming scheme.

from generating a huge whatis entry.

current canvas. This is useful to export dirty rectangles. Accordingly,
add caca_import_area_from_memory() and caca_import_area_from_file().

back to the libcucul merge.

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.