added a missing class

src/main/java/soot/ISootClassAddedListener.java

@@ -0,0 +1,41 @@
+package soot;
+
+/*-
+ * #%L
+ * Soot - a J*va Optimization Framework
+ * %%
+ * Copyright (C) 2002 Ondrej Lhotak
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 2.1 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Lesser Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Lesser Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ * #L%
+ */
+
+/**
+ * Interface to notify client code that a new class has been added to the scene
+ * 
+ * @author Steven Arzt
+ *
+ */
+public interface ISootClassAddedListener {
+
+  /**
+   * Callback that is invoked when a SootClass has been added to the scene
+   * 
+   * @param sc
+   *          The SootClass that as been added
+   */
+  public void onSootClassAdded(SootClass sc);
+
+}