- Renaming "Net" folder to "net".
- Completing getter functions of TAP Interface class.
- Extracting TAP Interface State structure from TAP Interface class
  and putting in new hpp and cpp files.
- Moving config.h to include/misc/config.h
- Removing boost program options
- Updating src/Makefile.am
- Simplifying main.cpp :-p
- Fixing compilation bugs