CodeSnip Old Code (SVN)

* Extracted code that deals with snippets and snippet lists from USnippets into new DB.USnippet unit.
* Modified affected code accordingly.

Refactoring:
* Renamed numerous identifiers that refer to "routine" with those that refer to "snippets" where appropriate.
* Updated calling code where required.

Refactoring: Renamed TRoutine, TRoutineEx and TTempRoutine to TSnippet, TSnippetEx and TTempSnippet.

Removed TODO suggesting new feature. Added to feature tracker on SourceForge.

* Renamed TRoutinePrintDocument as TSnippetPrintDocument and renamed various fields and parameters similarly.
* Updated using UPrintMgr unit accordingly.

Updated print engine, print manager and unit containing print documents to use TRTF to contain documents instead of TStream.

Included a temporary fix in TRoutinePrintDocument to work with streams still produced by TRTFRoutineDoc.

* Heavily revised UView unit once more to make views interfaced based.
* Updated using units re changes.
* Replaced many FreeAndNil calls with calls to .Free method.

Heavily revised UView unit
* Replaced flexible and "smelly" single TViewItem class that handled all view types with heirachy of classes for each view type.
* Added factory class.
* Updated using units re changes.

Development branch for CodeSnip release 4.

Initial source is a copy of v3.8.4 (r1075).