CodeSnip Old Code (SVN)

Changed use of "criteria" to "filter" in various identifiers in USearch unit and in using code to better reflect purpose of the names. Made changes to affected code.

Removed IStoredSelectionSearchCriteria interface: using ISelectionSearchCriteria instead.
Removed redundant TSearchCriteriaFactory.CreateSelectionSearchCriteria method overload and renamed other overload as CreateManualSelectionSearchCriteria.
Updated all affected code as required.

Rationalised TSearchFactory: replaced all search specific methods except CreateNulSearch with new generic CreateSearch.
Revised calling code to call CreateSearch.
Reimplemented CreateNulSearch to call CreateSearch internally.

Revised load and save dialogue box titles and corrected file description used in filters.

New units that manage new stored selection search: USelectionIOHandler handles reading and writing selections from and to files while USelectionIOMgr.pas manages user interaction to open and save files.