802.15.4: Extracted Ieee802154NarrowbandMac.
DYMO: Removed obsolete TODO.
Radio: Removed Ieee80211RadioMedium dependency on APSK.
Radio: Removed dependency on APSK modules.
Examples: Followed recent renames.
Radio: Factored out Ieee80211Radio.
Radio: Removed more APSK dependency.
Radio: Added TODOs.
Radio: Factored out NarrowbandRadioBase.
Radio: Added documentation to Ideal radio models.
Radio: Added more documentation.
Radio: Added mobilityModule parameter to antenna models.

Added documentation to antenna models.
Radio: Added even more documentation.
coverity: diffserv: CID 77588, 77637, 77652, 77676, 77878, 77898: uninitialized member variables
coverity: diffserv: CID 77725 Structurally dead code
coverity: aodv: CID 77838 Uninitialized members
coverity: aodv: CID 77870, 77903 Unchecked dynamic_cast
coverity: bgp: CID 77721, 77871 Uninitialized members
coverity: dymo: CID 77780 Uninitialized scalar field
coverity: ieee802.11: CID 77664 Unchecked dynamic_cast