Imported GNU Classpath 0.90

Imported GNU Classpath 0.90
       * scripts/makemake.tcl: Set gnu/java/awt/peer/swing to ignore.
       * gnu/classpath/jdwp/VMFrame.java (SIZE): New constant.
       * java/lang/VMCompiler.java: Use gnu.java.security.hash.MD5.
       * java/lang/Math.java: New override file.
       * java/lang/Character.java: Merged from Classpath.
       (start, end): Now 'int's.
       (canonicalName): New field.
       (CANONICAL_NAME, NO_SPACES_NAME, CONSTANT_NAME): New constants.
       (UnicodeBlock): Added argument.
       (of): New overload.
       (forName): New method.
       Updated unicode blocks.
       (sets): Updated.
       * sources.am: Regenerated.
       * Makefile.in: Likewise.

From-SVN: r111942

libjava/classpath/java/net/URLConnection.java

@@ -598,6 +598,9 @@ public abstract class URLConnection
    */
   public void setAllowUserInteraction(boolean allow)
   {
+    if (connected)
+      throw new IllegalStateException("Already connected");
+    
     allowUserInteraction = allow;
   }
 
@@ -776,7 +779,7 @@ public abstract class URLConnection
    *
    * @param key The name of the property
    *
-   * @return Value of the property
+   * @return Value of the property, or <code>null</code> if key is null.
    *
    * @exception IllegalStateException If already connected
    *