Spectrum model documetation placeholder
Bug 1190 - Suppress hello if bcast was sent within the last hello interval
Bug 1190 - Suppress hello if bcast was sent within the last hello interval
Bug 1522 - Hidden node scenario leads to ARP failure
Merge
Bug 1753 Halting Issue with DistributedSimulatorImpl
Make CommandLine print boolean defaults as text.

And
- clarify the documentation
- make example arguments more explicit
- make "--boolArg" toggle the value, not set to true (this enables
    toggle on default true values)
Include all examples in doxygen
Include all doc images in doxygen
Link to bug num in bug database with \bugid{num}
Link to RFC num with \RFC{num}