Provide a backup recovery function that instead of dropping primaries
and restoring backups merges the primaries and backups. This should
handle a worst-case safe-save failure where the backup tables don't
have a complete set of rows for some reason.
Removes a public function, GncDbiSqlConnection::table_manage_backup that
should have been private in the first place.
Better encapsulates table renames and drops with private functions and
handles cases where there exist some primary tables and some backup tables.
It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)
This is the first step in restructuring the code. It will need much
more fine tuning later on.
