Merge pull request #56 from duthils/master

Mac packaging
detect if the arch is 64bits, and install the driver accordingly
update naming
install the proper windows tuntap driver based on the ARCH (64 or 32bits)
remove popup menu
add current_dir into the include path
choose w32 or linux when linking with libraries
the path where the moc ui is generated is now included
add the proper tuntap driver (32/64bits) on windows
add a variable to specify the build directory
remove legacy code
mac osx icon format
add cpack debian generator
statically link libraries
improve Mac OS package (DragNDrop)
Merge pull request #57 from duthils/macos-packaging

improve Mac OS package (DragNDrop)
on apple system, the file is next to the executable
Merge branch 'master' of github.com:nicboul/DNDS