Merge pull request #2 from vpiserchia/dev-netmap

removed unused variables
Merge pull request #3 from vpiserchia/dev-netmap

Dev netmap
Netmap make startup a bit less noisy SCLogInfo->SCLogDebug
some work on Netmap TAP/IPS modes
some Netmap configuration enforcement
sneaking up on Netmap transmit
Netmap IPS/TAP starting to function
Netmap atomic add/sub on Netmap ring reserved field
Netmap source-netmap.h cleanup
Netmap source-netmap.c cleanup