don't force module names to begin with "DUNE_"

[[Imported from SVN: r5279]]

common/version.hh

@@ -3,7 +3,7 @@
 #ifndef DUNE_VERSION_HH
 #define DUNE_VERSION_HH
 
-#define DUNE_VERSION_JOIN(module,type) DUNE_ ## module ## _VERSION_ ## type
+#define DUNE_VERSION_JOIN(module,type) ## module ## _VERSION_ ## type
 
 #define DUNE_VERSION_EQUAL(module,major,minor) \
   ((DUNE_VERSION_JOIN(module,MAJOR) == major) && \