make the status of the ZConfig.Context and ZConfig.Config modules

clear in the table of contents and section headings too.

doc/ZConfig/zconfig.tex

@@ -834,7 +834,7 @@ This module provides these functions:
 % The modules described here have been left in the package while
 % everything is updated to use the schema-based configurations.
 
-\section{\module{ZConfig.Context} --- Application context}
+\section{\module{ZConfig.Context} --- Application context (obsolete)}
 
 \declaremodule{}{ZConfig.Context}
 \modulesynopsis{Application context.}
@@ -948,7 +948,7 @@ taht is defined for the syntax implemented by the alternate parser.
 \end{methoddesc}
 
 
-\section{\module{ZConfig.Config} --- Section objects}
+\section{\module{ZConfig.Config} --- Section objects (obsolete)}
 
 \declaremodule{}{ZConfig.Config}
 \modulesynopsis{Standard section objects.}