More trivial Classpath merging

[Mark Wielaard]

Hi,

Here are another 12 classes that can be trivially merged with Classpath.
It is mainly adding comments from the Classpath version. The only real
code change is the removal of the synchronized modifier of the mark()
and reset() methods in FilterInputStream and FilterReader.

Note that MultiCastSocket has still a two lines difference with the
Classpath version since the superclass DatagramSocket has not yet
been merged.

Mark Wielaard  <mark@klomp.org>

    * java/io/FileWriter.java: Merge with Classpath.
    * java/io/FilterInputStream.java: Ditto.
    (mark): no longer synchronized
    (reset): Likewise
    * java/io/FilterOutputStream.java: Merge with Classpath.
    * java/io/FilterReader.java: Ditto.
    (mark): no longer synchronized
    (reset): Likewise
    * java/io/FilterWriter.java: Merge with Classpath.
    * java/io/Writer.java: Ditto.
    * java/lang/Compiler.java: Ditto.
    * java/lang/Process.java: Ditto.
    * java/lang/Void.java: Ditto.
    * java/net/ContentHandler.java: Ditto.
    * java/net/DatagramPacket.java: Ditto.
    * java/net/MulticastSocket.java: Merge comments with Classpath.

OK to commit?

Cheers,

Mark
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