BufferedReader.java, [...]: Re-merged with Classpath.

* java/io/BufferedReader.java, java/io/ObjectInput.java,
	java/io/ObjectInputValidation.java, java/io/ObjectOutput.java:
	Re-merged with Classpath.

From-SVN: r45342

libjava/java/io/BufferedReader.java

@@ -72,6 +72,8 @@ public class BufferedReader extends Reader
      guaranteed to be >= the read-limit requested in the call to mark. */
   int markPos = -1;
 
+  // The JCL book specifies the default buffer size as 8K characters.
+  // This is package-private because it is used by LineNumberReader.
   static final int DEFAULT_BUFFER_SIZE = 8192;
 
   /**