Ict.Tools.NantTasks.dll: added new feature to 'nant generateNamespaceMap' for special DLL references.
* If the need to reference a DLL in a C# project that doesn't have its own namespace arises: allow the specification of that DLL by way of a special comment right between the ‘using’ clauses section and the line that contains ‘namespace’ in any of the files that are contained in the C# Project file where that reference is needed. The special comment reads like this: '// generateNamespaceMap-Link-Extra-DLL System.Data.DataSetExtensions;' (for adding the 'System.Data.DataSetExtensions.dll').