Moved Mage.Common classes from src to src/main/java

Mage.Common/src/main/java/mage/interfaces/PluginException.java

@@ -0,0 +1,22 @@
+package mage.interfaces;
+
+import mage.MageException;
+
+/**
+ * Exception thrown by plugin on errors.
+ * 
+ * @author nantuko
+ * 
+ */
+public class PluginException extends MageException {
+
+    private static final long serialVersionUID = 5528005696138392272L;
+
+    public PluginException(String message) {
+        super(message);
+    }
+
+    public PluginException(Throwable t) {
+        super(t);
+    }
+}