First cut at updating compiler and runtime to handle lua 5.2 bytecodes. Able to compile and execute "hello, world" lua script.

test/junit/org/luaj/vm2/compiler/CompilerUnitTests.java

@@ -5,23 +5,26 @@ package org.luaj.vm2.compiler;
 public class CompilerUnitTests extends AbstractUnitTests {
 
     public CompilerUnitTests() {
-        super("lua5.1-tests.zip", "lua5.1-tests");
+        super("lua5.2.1-tests.zip", "lua5.2.1-tests");
     }
 
-     public void testAll()        { doTest("all.lua"); }
+    public void testAll()        { doTest("all.lua"); }
 	public void testApi()        { doTest("api.lua"); }
 	public void testAttrib()     { doTest("attrib.lua"); }
 	public void testBig()        { doTest("big.lua"); }
+	public void testBitwise()    { doTest("bitwise.lua"); }
 	public void testCalls()      { doTest("calls.lua"); }
 	public void testChecktable() { doTest("checktable.lua"); }
 	public void testClosure()    { doTest("closure.lua"); }
 	public void testCode()       { doTest("code.lua"); }
 	public void testConstruct()  { doTest("constructs.lua"); }
+	public void testCoroutine()  { doTest("coroutine.lua"); }
 	public void testDb()         { doTest("db.lua"); }
 	public void testErrors()     { doTest("errors.lua"); }
 	public void testEvents()     { doTest("events.lua"); }
 	public void testFiles()      { doTest("files.lua"); }
 	public void testGc()         { doTest("gc.lua"); }
+	public void testGoto()       { doTest("goto.lua"); }
 	public void testLiterals()   { doTest("literals.lua"); }
 	public void testLocals()     { doTest("locals.lua"); }
 	public void testMain()       { doTest("main.lua"); }