X11 extensions are upward compatible only if they have the same major
version number. In other words, we wouldn't support XVideo >= 3.0.

This requires libx11-xcb, since the higher layers of GLX are not
available for pure X11 C Bindings currently.

TBD: resizing and GLX 1.3

Handle caching and fix race conditions

It was already used in the code...

This saves some precious memory if we don't browse them.

Recents items from 1 to 9 are supported to Ctrl+1 to Ctrl+9

The height is one pixel less. I am not sure we can improve that a lot now.

This patch fixes failed assertions occurring sometimes on var_DelCallback for intf-event for input objects.

Also, let the possibility to run vlc -H.

Pointed-out-by Rémi Denis-Courmont <remi@remlab.net>.

This saves 16MB minus 16kB of live memory during audio stream playback on Mac OS X.

macosx/framework: Don't attempt to do anything at exit or at construction this is nasty for a Framework.

psz_logmode is tested for NULLity, so we need to use *NonEmpty*.
Also, always delete the variable. If the reference count was 1, we will
revert back to the configuration value, which makes no difference.

ATM, java bindings use Enum.ordinal() to convert the enum name to its value. However, this approach is broken in the case of discontinuous enums such as libvlc_media_option_t.
Java bindings maintainers should convert their code to use the enum.value() method.

Pointed-out-by Mike Schrag <mschrag@mdimension.com>.

This is done to better diagnosticate misconfiguration of libvlc path.

Spotted by Dominique Leuenberger. Thanks.

This works around GNU coreutils nohup not working with VLC.
Pointed-out-by: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>

It is used in many places, namely all X11 plugins _except_ the video
display ones. So it did not make much sense to keep it there IMHO.