* Removed compatibility code from log r/w. Logs prior to 3.1 will
read but some fields will be ignored.
* Added new method "newrec" to CQsoDb class.
* Modified logbook read and write behavior to eliminate duplication
and employ faster string lookup algorithm in matching ADIF tags
to internal database entries.
* Changed logbook menu to comply with 3.21 maintenance version
* Created separate thread for writing database. User with over
35,000 records was experiencing UI interruption of several
seconds on Windows XP system.
Enabled access to a single fldigi adif logbook database from
multiple running instances of fldigi or fldigi and another
program using same database file.
Changed creation of NBEMS directory structure.
* Only created when required by program or elected by
operator when using the File/Folders/NBEMS files... menu item
* Changed NBEMS directory to ~/.nbems/ on Linux and friends
* NBEMS directory remains NBEMS.files on Windows