Util: Consolidate two copies of WriterOutputStream into jetty-i2p.jar

apps/jetty/java/src/net/i2p/servlet/util/WriterOutputStream.java

@@ -0,0 +1,20 @@
+package net.i2p.servlet.util;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.Writer;
+
+/**
+ * Treat a writer as an output stream. Quick 'n dirty, none
+ * of that "intarnasheeonaleyzayshun" stuff.  So we can treat
+ * the jsp's PrintWriter as an OutputStream
+ *
+ * @since 0.9.33 consolidated from routerconsole and i2psnark
+ */
+public class WriterOutputStream extends OutputStream {
+    private final Writer _writer;
+    
+    public WriterOutputStream(Writer writer) { _writer = writer; }
+
+    public void write(int b) throws IOException { _writer.write(b); }
+}