update version to 3.10
update version to 3.10

It seems I forgot to release 3.9 when that kernel was starting,
so there's little point in doing it now. The 3.10 merge window
has opened and wireless features are finalized, so this version
of iw matches what will be supported in 3.10.

cozybit/iw,chunyeow/iw,Distrotech/iw,CTU-IIG/802.11p-iw,bw-oss/iw,Distrotech/iw,chunyeow/iw,greearb/iw-ct,cozybit/iw,bw-oss/iw,greearb/iw-ct,CTU-IIG/802.11p-iw