Fixed 1 thread no RX

 When only 1 thread was spcefied, no NIC got registered. (RX did not work.)
Removed strict error checking

  Did not comply on Ubuntu 14.04.
Added verbosity

  Added verbosity to find out why is pkt-gen receive using only one queue.
Merge pull request #1 from semirke/master

Fixes to pkt-gen.c