CodeSnip Old Code (SVN)

Moved all change event handling code from _TDatabase into TDatabase and removed AddChangeEventHandler and RemoveChangeEventHandler from _IDatabase.
Relocated TDatabaseChangeEventKind and IDatabaseChangeEventInfo within DB.UMain unit to be visible to TDatabase.
Modified all code that called AddChangeEventHandler and RemoveChangeEventHandler from _Database object to call methods on Database object instead.

Added some TODOs

Corrected in header comments

Modified comments and string literals referring to the "user" database or "user-defined snippets" to remove or qualify the word "user".

Minor typo fixed.

Noted change in file watermarks.

Changed native database file "watermarks" to remove the word "USER" and add a UID that is common to both files.

Added parameter to TFolderBackup.Restore to enable folder receiving restored files to be emptied before files are restored. Changed TUserDBRestoreUI.TRestoreThread.Execute to pass use the revised TFolderBackup.Restore to ensure existing database files are removed before restoring database from backup.

Fixed bug in TDatabaseIOFactory.CreateLoader that was using TDBLegacyUserDBReader when legacy database was not present.

Changed TDatabase to update last modification date each time dirty flag is set True.