IFECCoder, IInterleaver, IScrambler: encoder/decoder modules should not delete the metadata.
Ieee80211OFDMDemodulator: fixed a major bug.
Ieee80211OFDMDemodulator, Ieee80211LayeredDecoder: some code moved from the OFDMDemodulator to the Ieee80211LayeredDecoder.
Ieee80211LayeredEncoder: followed recent renamings.
APSKModulationBase: bitvector representation of APSK symbols need to be padded.
IModulation: added a virtual destructor.