add documenation, correct cvs keyword

git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@576 7ec92016-0320-0410-acc4-a06ded1c099a

test/SingletonDll/client.cpp

@@ -10,12 +10,26 @@
 //     without express or implied warranty.
 ////////////////////////////////////////////////////////////////////////////////
 
-// $Header:
+// $Header$
 
+/*
+
+Test for singletons in a shared libraries:
+
+- there is a Foo class in Foo.dll/so
+- there is a Foo singleton object which is exported by SingletonDll.dll/so
+- the Foo singleton object is  managed by a Loki::SingletonHolder typedef
+- the declaration of the Loki::SingletonHolder type is visiable only
+  in singletondll.cpp
+- a client (this file) imports the singleton object from SingletonDll.dll/so
+
+*/
 
 #include "singletondll.h"
 #include "foo.h"
 
+
+
 int main()
 {
 	Foo& foo = Singleton<Foo>::Instance();