jProjectTranslator Files

Fixes to Ardour file reader to improve compatibility with Ardour 3
Fix to BWFProcessor where file copy completion status sometimes stopped at 99%.
New feature in VCS project reader where the local folder is searched for source audio files if they're not already found.
Fix in wave file writer where changes to improve file locking behaviour had broken the writing of the wave file headers.
Updated date in copyright notice.
Fixes in file writers where int was used where long should have been used.
Fix for problem when reading an Ardour file where some of the source audio files were missing.