-Added Worker::Queue
-Added tests for Worker:Queue
-Change name to be more private
-Fix language errors in man pages. Thanks to Denis Zhukov.
-Added CMake module for pcap library
-Added pcap library as requirement
-Link with libpcap target library
-Added work queue class and tests for it
-Add net IO classes
-Fix documentation. Thank to Denis Zhukov.
-Fix layout of messages for syslog, improve tests
-Dirty version of net -> input queue -> handler -> output_queue -> net handler
  thread
-Added operators<< for ethernetAddress and inetAddress
-IP header checksumm calculation
-Dirty version of input procedure
-Allow to specify number of worker threads per interface
-Added input procedure for ethernet
-Reorganize packet parsing procedures.
-Preparations for abstraction from link-layer
-On FreeBSD _SC_GETPW_R_SIZE_MAX is not supported by sysconf().
Use instead default value for 2K.
-Free allocated resources
-Reorganize network routins
-Die if all workers exited with error status
-Added class hierrarchy for link layer address and header (for supporting layer2
different from ethernet)
-Added classes for representation of Ethernet, IP and UDP headers. Added tests.
-Cleanup a little
-Split CMakeLists onto two files (one with tests and second with program itself)
-Rename class EtherHeader to EthernetHeader, to be in tact with other classes
-Minor changes
-Consider input procedure as stable
Merge branch 'worker'