kismet: bump to version 2013-03-R1b

Fixes issues in the configure script.
Also make libnl a mandatory dependency to fix:
http://autobuild.buildroot.net/results/c8bf63f4ee013bd3467934c87c61478a1f95e3eb/


Kismet isn't too useful without it anyway.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>