This fixes a locked database issue on Windows.
The issue was caused by the backup process having an open database, and then not passing that connection to the lock handler.
The lock handler would then attempt to open a new connection to the same database, which would fail.
This PR fixes the issue by passing an instance of the database to the lock handler.
Also addressed a logic issue where the dbpath was checked, even if an existing database connection was found.
Also fixed the lock results not setting the EndTime property, causing the reported lelapsed time to be off.
Kenneth Skovhede
bc968cbaf0