* Consolidated the Metadata Wildcard definitions in the
'RDResolveNowNext()' function into the 'RDLogLine::resolveWildcards()'
method.
* Added 'recordMbId' and 'releaseMbId' fields to the cut XML data
schema.
* Added '%wm' ['MusicBrainz Recording ID'] and '%wr'
['MusicBrainz Release ID'] metadata wildcards.
* Renamed the 'RDWaveData::introStartPos()' method to
'RDWaveData::talkStartPos()'.
* Renamed the 'RDWaveData::setIntroStartPos()' method to
'RDWaveData::setTalkStartPos()'.
* Renamed the 'RDWaveData::introEndPos()' method to
'RDWaveData::talkEndPos()'.
* Renamed the 'RDWaveData::setIntroEndPos()' method to
'RDWaveData::setTalkEndPos()'.
* Added an 'RDWaveData::validateMarkers()' method.
* Added an 'RDWaveData::validateDateTime()' method.
* Removed the 'RDWaveData::checkDateTimes()' method.
* Fixed a bug in 'rdlibrary/audio_cart.cpp' where the 'Conductor'
failed to be imported from RDXL chunks.
* Added a 'songId' field to the cart metadata XML.
* Added rdxml_parse_test(1) in 'tests/'.
* Added a RDCart::readXml()' method in 'lib/rdcart.cpp' and
'lib/rdcart.h'.
* Fixed a typo in the 'averageSegueLength' field in the 'RDCart::xml()'
method in 'lib/rdcart.cpp'.
* Removed the 'validity' field from the output of the 'RDCart::xml()'
method in 'lib/rdcart.cpp'.
* Removed the 'validity' and 'localCounter' fields from the output
of the 'RDCut::xml()' method in 'lib/rdcut.cpp'.
