* Fixed a bug in 'RDAudioExport', 'RDAudioImport',
'RDAudioStore', 'RDCart', 'RDCopyAudio', 'RDPeakExport',
'RDRehash', and 'RDTrimAudio' that caused credentials encoded in
UTF-8 to be corrupted.
* Cleaned up memory leaks in 'RDAudioExport', 'RDAudioImport',
'RDAudioStore', 'RDCart', 'RDCopyAudio', 'RDPeakExport',
'RDRehash', and 'RDTrimAudio'.
* Modified Xload operations in 'RDDelete', 'RDDownload' and
'RDUpload' to work properly with credentials using UTF-8 strings.
* Added a 'CUTS.SHA1_HASH' field to the database.
* Incremented the database version to 261.
* Added a 'Sha1' column to the Cut List in 'rdlibrary/audio_cart.cpp'.
* Added 'RDCut::sha1Hash()' and 'RDCut::setSha1Hash()' methods in
'lib/rdcut.cpp' and 'lib/rdcut.h'.
* Added a '--rehash=' directive to rddbcheck(8).
* Added a 'Rehash' Web API call.
* Added an 'RDRehash' class in 'lib/rdrehash.cpp' and 'lib/rdrehash.h'.