Remove __devinitdata, it's obsolete and breaks compilation on Linux 3.8+
Remove all references to ath_info

It's a dangerous program that should be distributed separately from
MadWifi, with its own README full of serious warnings.

ath_info is not even using MadWifi, it writes to the hardware registers
directly.  ath_info is definitely not needed to use MadWifi.  It could
help with the development, but so could Wireshark and many other
programs that are not part of MadWifi.
Remove all references to svnversion, MadWifi svn is gone

git revisions are of little use.