sucks in small resolutions.

* Use RETSIGTYPE for signal handler return values.

in the SLang driver.
  * Cosmetic fixes in configure.ac.

* Got rid of static buffers; we now use cucul_free() to free exported
    buffers.
  * Fixed light background in the ANSI exporter by adding escape sequences for
    most terminal emulators.

are unable to cleanly restore the state.

a network port, we could have guessed.

+ Changed port to 51914 (rationale: it's 0xCACA; so okay, it's outside
      the registered ports area, but we'd never be accepted anyway).
    + Retry network sends in caca_get_event(), too.
    + Have a per-client buffer in case of network congestion. If that buffer
      gets full, just drop it and start again at the next frame.
    + Set the window title to "caca for the network".
    + Do not send the ANSI buffer's terminating \0.
    + Restore the SIGPIPE handler on close.
    + Set window size to 80x24 instead of 80x25.

Note to developers: use that chunk in your ~/.subversion/config:

[miscellany]
enable-auto-props = yes

[auto-props]
*.m = svn:keywords=Id
*.h = svn:keywords=Id
*.mm = svn:keywords=Id
*.c = svn:keywords=Id
*.cpp = svn:keywords=Id
*.pch = svn:keywords=Id
*.command = svn:keywords=Id
*.pl = svn:keywords=Id
*.pm = svn:keywords=Id
*.py = svn:keywords=Id
*.sh = svn:keywords=Id
*.txt = svn:keywords=Id
*.html = svn:keywords=Id
*.php = svn:keywords=Id

writes. Currently works very badly with more than one client.

network_display() so that new clients immediately get the contents
    of the canvas and do not need to wait for a caca_display() call.

cucul_putchar32() function but I'm not convinced it will be useful.

they can force a resize. We need to find a way to make those specific
    cucul - caca interactions unavailable to the clueless user.

80x25 upon initialisation.

* Print a small message at kernel boot time just to check that the kernel
    was properly loaded.