Instructions for compiling/running MANET sim with ns3-gnutella:
 1. In the "manet" directory (i.e. this directory), get a clone of ns3-gnutella:
        git clone https://github.com/ainscore/ns3-gnutella

 2. Copy the source files into this directory:
        cp ns3-gnutella/*.cc ns3-gnutella/*.h .

 3. Fix the following bug in Descriptor.h (this crops up on my ns3 installation,
    which is configured to run g++ with -Werror):
        a. edit Descriptor.h
        b. find the "PongDescriptor" class, and make the destructor virtual
           (should be line 163 of Descriptor.h):
           i.e. change:
                ~PongDescriptor();
           to be:
                virtual ~PongDescriptor();

 4. Delete ns3-gnutella's main script (we won't be using it):
        rm gnutella.cc

 5. Run the manet sim:
        ./waf --run "manet --application=gnutella"