Build v4l-utils without needing libv4l
    
    Some of the v4l-utils are dependent on the libv4l shipped with it.
    However, as RHEL6 ships its own version on it (generally a legacy
    one), change the build system to build only a local static copy of
    libv4l, and linkedit the tools that need it statically.
    
    Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>