CodeSnip Old Code (SVN)

Merged revision(s) 3896 from branches/parsnip:

This reverses revision 3896. The CS.Database.IO.Legacy.UserDB unit had too many differences to the current database code in "parsnip" to be easily integrated.

Copied CS.Database.IO.Legacy.UserDB unit from "experimental" branch into "parsnip" and added to project.

Added new unit containing an implementation of ITagSet.

Note: this is NOT a copy of the unit of the same name in the "experimental" branch.

Some tweaks to ITagSet.

Replaced ITagList with ITagSet interface and supporting closure type.

Removed "DB" from any identifiers associated with tags.

Modified TDBTag to validate tag ids and to use tags as provided instead of replacing spaces with underscores.

Fixed TDBSnippetID and TDBTag hash functions.

Copied CS.Database.Types unit from "experimental" branch into "parsnip" and added to project.

Moved some date/time routines from UUtils unit to CS.Utils.Dates and updated uses clauses of affected units.