Various tools for using VRF on Linux.

Options for installing
1. make install
   installs file in current filesystem. Path prefix can be set
   using DESTDIR.
      e.g., make install
            make DESTDIR=/tmp/vrf install

2. make uninstall
     inverse of 'make install'. Remove files from current filesystem.
      e.g., make uninstall
            make DESTDIR=/tmp/vrf uninstall

3. make rpm
     Create an rpm package that can be installed

4. make deb
     Create a debian package that can be installed