Added channel and QoS aware (CQA) scheduler. Added test classes and updated the documentation that describes new scheduler, test class and added reference to the literature. Updated wscript with new scheduler and test class.
merge
updated lte design docs
updated RELEASE_NOTES
fixed Bug 1820 - models library doc: make should not rm -rf figures by default
fixed latexpdf build of LTE docs
fixed Bug 1730 - no model library documentation for spectrum module
fixed unused variable + doxygen in cqa-ff-mac-scheduler.h
Bug 1821 - Setting an interface to Down state will cause various asserts in IPv6
Bug 1823 - IPv6 fails to work on NOARP NetDevices (revert changeset 9760)