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.

* 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 invalid pointer/int cast (Closes #39).

of hardcoding the feature list in img2txt.

accordingly.
  * The C++ test example no longer needs "config.h".

functions to access its real data. This is a big API change that will
    break your software, sorry :(

accordingly

PREPARE rule and did minor cleanup (SCNR).

<bsittler@gmail.com>