buildroot

libvpx: new package libvpx

adds webm multimedia support and the VP8 encoder/decoder library.

http://www.webmproject.org/

[Peter: strip trailing spaces, wrap help text]
Signed-off-by: Spenser Gilliland <spenser@gillilanding.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>