(svn r22805) -Codechange: move use of magic number for version checking to more logical location

src/rev.cpp.in

@@ -10,8 +10,18 @@
 /** @file rev.cpp Autogenerated file with the revision and such of OpenTTD. */
 
 #include "stdafx.h"
+#include "core/bitmath_func.hpp"
 #include "rev.h"
 
+/**
+ * Is this version of OpenTTD a release version?
+ * @return True if it is a release version.
+ */
+bool IsReleasedVersion()
+{
+	return HasBit(_openttd_newgrf_version, 19);
+}
+
 /**
  * The text version of OpenTTD's revision.
  * This will be either "<major>.<minor>.<build>[-RC<rc>]",