Fix a few VM issues which were causing subtle failures in the test cases.

Includes a new VM method, newCall, which must be called before pushing
a call onto the stack to make sure that base is set correctly.
A couple of weird issues remain with autoload.lua.

src/test/java/LuaJavaAppRunner.java

@@ -3,6 +3,7 @@ import java.io.IOException;
 import java.io.InputStream;
 
 import lua.StackState;
+import lua.addon.luacompat.LuaCompat;
 import lua.addon.luajava.LuaJava;
 import lua.io.Closure;
 import lua.io.LoadState;
@@ -20,6 +21,9 @@ public class LuaJavaAppRunner {
 
 	public static void main( String[] args ) throws IOException {
 
+		// add LuaCompat bindings
+		LuaCompat.install();
+		
 		// add LuaJava bindings
 		LuaJava.install();
 		

src/test/java/lua/LuaJTest.java

@@ -51,7 +51,11 @@ public class LuaJTest extends TestCase {
 	public void testBoolean() throws IOException, InterruptedException {
 		runTest( "boolean" );
 	}
-	
+
+	public void testCalls() throws IOException, InterruptedException {
+		runTest( "calls" );
+	}
+
 	public void testCoercions() throws IOException, InterruptedException {
 		runTest( "coercions" );
 	}