Add version "Luaj ${version}" into _VERSION field at build time.

src/test/java/org/luaj/jit/LuaJitTest.java

@@ -0,0 +1,21 @@
+package org.luaj.jit;
+
+import java.io.IOException;
+
+import org.luaj.jit.LuaJit;
+import org.luaj.vm.LPrototype;
+import org.luaj.vm.LuaJTest;
+import org.luaj.vm.LuaState;
+
+/**
+ * Suite of standard tests, but using the LuaJit compiler 
+ * for all loaded prototypes.
+ */
+public class LuaJitTest extends LuaJTest {
+        
+    protected LPrototype loadScriptResource( LuaState state, String name ) throws IOException {
+    	LPrototype p = super.loadScriptResource(state, name);
+    	return LuaJit.jitCompile(p);
+    }
+    
+}