Various qdoc errors for undocumented functions in Connectivity

Undocumented functions were reported in the following:

Various functions in bluetoothsymbianpairingadapter.cpp

Also in bluetoothsymbianregistryadapter.cpp , nfc/qnearfieldtagtype1_symbian.cpp
nfc/symbian/nearfieldmanager_symbian.cpp , nfc/qnearfieldtagtype1_symbian.cpp

nfc/qnearfieldtagtype1.h (handleResponse() undocumented)

nfc/symbian/nearfieldtag_symbian.cpp

bluetooth/symbian/bluetoothlinkmanagerdevicediscoverer.cpp (and header)

nfc/qnearfieldmanager_emulator.cpp

nfc/qnearfieldmanager.cpp

bluetooth/qbluetoothtransferreply.h