Added a comment since the java package restrictions impact the serializability of classes.

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@2877 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/dev/core/src/com/google/gwt/dev/shell/CompilingClassLoader.java b/dev/core/src/com/google/gwt/dev/shell/CompilingClassLoader.java
index 9d083a6..31b9f57 100644
--- a/dev/core/src/com/google/gwt/dev/shell/CompilingClassLoader.java
+++ b/dev/core/src/com/google/gwt/dev/shell/CompilingClassLoader.java
@@ -669,6 +669,10 @@
     }
   }
 
+  /**
+   * NOTE: This logic is also used in SerializableTypeOracleBuilder; don't
+   * change this one without changing the other.
+   */
   private boolean isInStandardJavaPackage(String className) {
     if (className.startsWith("java.")) {
       return true;