Updated name for shadow callbacks

Makefile.in

@@ -21,5 +21,5 @@ install_cinderella:	all
 	cp lib/callbacks.exe $(prefix)/bin/callbacks.cinderella.exe 
 
 install_datashadow:	all
-	cp lib/callbacks.exe $(prefix)/bin/callbacks.shadow.exe 
+	cp lib/callbacks.exe $(prefix)/bin/callbacks.datashadow.exe