Adds NED export to the BRITE topology generator (http://www.cs.bu.edu/brite)

Usage: Download BRITE from www.cs.bu.edu/brite/, untar it, cd into its directory, then run the following command:

patch -p 1 < brite21-omnetpp.patch

If you’re running Windows, you can get patch.exe from e.g. UnxUtils or Cygwin.