Change variable method is async now.

python/src/com/jetbrains/python/console/PydevConsoleCommunication.java

@@ -532,6 +532,8 @@ public class PydevConsoleCommunication extends AbstractConsoleCommunication impl
   public void changeVariable(PyDebugValue variable, String value) throws PyDebuggerException {
     if (myClient != null) {
       try {
+        // NOTE: The actual change is being scheduled in the exec_queue in main thread
+        // This method is async now
         Object ret = myClient.execute(CHANGE_VARIABLE, new Object[]{variable.getEvaluationExpression(), value});
         checkError(ret);
       }

python/testSrc/com/jetbrains/env/python/PythonConsoleTest.java

@@ -122,8 +122,9 @@ public class PythonConsoleTest extends PyEnvTestCase {
         
         setValue("x", "2");
 
-        assertTrue("Variable has wrong value",
-                   hasValue("x", "2"));
+        exec("print(x)");
+
+        waitForOutput("2");
       }
     });
   }