nodogsplash: use v0.9_beta9.9.8 release
a new optimisation in openwrt is stripping some metadata information, invluding
the module version which is used by batctl to tell the user which version
batman-adv the node is currently running.

Un-define this constant to prevent the metadata from being stripped

Signed-off-by: Antonio Quartulli <ordex at autistici.org>
last patch was malformed, refresh 7936cfc9b862af3451dddd01e96501a38e6872be
Change bmx6 git repository to github since bmx6.net is down (hd failure)