xo-jit: incorporate kaleidoscope jit for codegen

example/ex_kaleidoscope4/ex_kaleidoscope4.cpp

@@ -0,0 +1,16 @@
+/** ex_kaleidoscop4.cpp **/
+
+#include "xo/jit/KaleidoscopeJit.hpp"
+#include <iostream>
+
+int
+main() {
+    using std::cerr;
+    using std::endl;
+
+    auto jit = xo::jit::KaleidoscopeJIT::Create();
+
+    cerr << "created kaleidoscope jit successfully" << endl;
+}
+
+/** end ex_kaleidoscope4.cpp **/