* Fixed a regression in rdairplay(1) that caused macro carts with
the 'Use Event Length for Now & Next Updates' attribute set to
fail to use the parent rdlogmanager(1) event/clock duration.
* Renamed the 'Use Event Length for Now & Next Updates' checkbox
in the 'Edit Cart' dialog in rdlibrary(1) to 'Use RDLogManager
Length for PAD Updates'.
* Updated the screenshot of the 'Edit Cart' dialog in the
Operations Guide.
* Fixed a bug in the 'RDEscapeString' function that caused corruption
in UTF-8 strings.
* Added a UTF-8 complaint MySQL driver in 'drivers/qt3-mysql-utf/'.
* Added a 'CART.USE_WEIGHTING' field to the database.
* Added a 'CUTS.PLAY_ORDER' field to the database.
* Incremented the database version to 254.
* Added a 'Schedule Cuts By' control to the Edit Cart dialog in
'rdlibrary/edit_cart.cpp' and 'rdlibrary/edit_cart.h'.
* Added 'RDCart::useWeighting()' and 'RDCart::setUseWeighting()'
methods in 'lib/rdcart.cpp' and 'lib/rdcart.h'.
* Added 'RDCut::playOrder()' and 'RDCut::setPlayOrder()' methods
in 'lib/rdcut.cpp' and 'lib/rdcut.h'.
Allow for saving of edited cart when duplicate cart titles are NOT allowed; Without this fix, it is impossible to edit existing carts when the global configuration does not permit duplicate cart names.