Oops :D

This should fix compilation with kernel headers 2.6.27 and older
(obviously not tested).

libv4l2 directly wraps the system call if it does not know the file
descriptor. There is no need for VLC to reinvent the wheel.

"libv4l *always* reports emulated formats to ENUM_FMT,
 except when conversion is disabled."

When libv4l2 is used:
 * open the device with close-on-exec descriptor flag,
 * convert from UTF-8 to local path.

avoid having extern Open() symbol defined multiple times in static builds

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

The largest change here consists of building the plug-ins cache after
vlc-cache-gen (instead of after modules previously).

Better patch welcome

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

Note that VLC does not support more than one alias per item.

...rather than in all modules/* directories

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>