ieee802.11: pass the info up whether the packet had a bit error or a ollision
build: changelog script date updated
doc: manual source moved under dox/src
test: fixed errors because of non-existent result dir
80211: fix wrong return value for freq
doc: whatsnew update
IPv6AddressType: feature fix
Merge master v2.3.0 into integration

Conflicts:
	src/physicallayer/radio/simplified/GenericRadioModel.cc
	src/physicallayer/radio/simplified/GenericRadioModel.h
	src/physicallayer/radio/simplified/IRadioModel.h
	src/physicallayer/radio/simplified/SimplifiedRadio.cc
	src/physicallayer/radio/simplified/ieee80211/Ieee80211RadioModel.cc
	src/physicallayer/radio/simplified/ieee80211/Ieee80211RadioModel.h
SimplifiedRadio: rollback kind setting - for generate original fingerprints
SimplifiedRadio: redo kind setting - omnetpp 5.0 fingerprints changed