* Added 'RDCart::xmlSql()' and second 'RDCart::xml()' methods.
* Refactored the 'RDCart::xml()' method to use a SQL query.
* Refactored the Cart and Cut web methods in 'web/rdxport/carts.cpp'
to use SQL queries.
* 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'.
* Fixed a bug in 'utils/rdimport/rdimport.cpp' that failed to
apply automatic segues correctly when the audio store was not
locally accessible.
* Fixed a bug in 'utils/rdimport/rdimport.cpp' that caused the
value of the '--segue-level' options to be wrong by a factor of
100.
* Refactored the 'RDCut::autoSegue()' method to fetch trim data
via 'RDTrimAudio'.
* Added language in the rdimport(1) man page to resolve ambiguity
regarding how the --segue-level location is dteremined when
normalization is specified.
