CodeSnip Old Code (SVN)

Changed TDBSnippetKey so that it doesn't support ordering of keys - just equality / inequality.
Updated tests in TestDBUSnippet.pas re changes to TDBSnippetKey.

Changed TDBSnippetKind to have same values, in same order, as TSnippetKind in trunk at r2327.
Changed TDBSnippetKindGroupKey so that it doesn't support ordering of keys - just equality / inequality.
Updated snippet kind descriptions.
Made changes to tests re renamings in TDBSnippetKind.
Updated tests in TestDBUSnippetKindGroup.pas re changes to TDBSnippetKindGroupKey.

* Added new UTestHelpers unit to unit tests project to provide commonly used code for use by test cases. Only content is TAlwaysFreeController class. (Neglected to add UTestHelpers to SVN repo - see r980 for rectification).
* Modified various test case units that provided their own implementations of TAlwaysFreeController to use version in UTestHelpers unit.

* Added new DB.USnippet unit that provides a skeleton implementation of a snippet along with supporting types.
* Added new DB.UConsts unit to provide basic type and constant definitions required by database code.
* Added test suite for DB.USnippet unit.