CodeSnip Old Code (SVN)

Moved and renamed Src/DB.UDatabase.IO.pas as Src/Main/CS.Database.IO.Factory.pas.
Updated reference in DB.UMain.pas.

Modified various erroneous comments that referred to categories.

Removed temporary Category (ID) property from TSnippetBase and all code that supported using the property.
Updated affected code by removing all references to category IDs.

Fixed bugs in TDBNativeReader's DatabaseExists and ValidateSnippetFileHeader methods. Former was always returning False and latter was testing for a master file watermark instead of snippet file.

Fixed bug in TDBNativeWriter code that deletes unwanted files: it could delete all files in directory!

Added new IDatabaseWriter interface and modified TDBNativeWriter to implement it.

Renamed CS.Database.IO.Null.pas as CS.Database.IO.Empty.pas and renamed TDBNullReader as TEmptyDBReader.
TEmptyDBReader.Load now passes out the current date instead of a null date.

Changed TDBNullReader.Load method to clear the given snippet table as happens in other database loaders.

New unit containing a null database loader class for use when there is no database present.

Corrected error in code that checks for correct XML processing instruction.