We shut the X11 connection down immediately anyway. This will
automatically undo all of our key grabs.

The X11 connection and the poll()'ing thread are useless if we don't
grab any single key. We still return VLC_SUCCESS to avoid an error while
VLC is being started.

recent xcb_key_symbols_get_keycode() now returns a pointer

Keep old API (as present in Debian Lenny for example) as requested by nefrir
GetModifier() is broken when using the new API, it might be broken as
well when using the old API.

Documents / source code of functions used in GetModifier() are very
welcome, libxcb only ships XML descriptions and the generated source
code is very unreadable.

The XLib support has been dropped, so xcb and xcb-keysyms is now needed for
this plugin.

Grrr a library that does exit on its own !

Noticed by courmish.