dcap: v. minor tidy up

The DCAP door explicitly invokes the flush method after sending each 
reply message; however, PrintWriter has a feature that will do this 
automatically.

This patch enables the auto-flush feature of PrintWriter and removes 
the explicit calls to flush.  It also removes the unused print method 
from DcapDoorInterpreterV3.

Target: trunk
Require-notes: no
Require-book: no
Patch: http://rb.dcache.org/r/5042
Acked-by: Tigran Mkrtchyan

modules/dcache-dcap/src/main/java/diskCacheV111/doors/DCapDoor.java

@@ -6,6 +6,7 @@
 import java.io.BufferedReader;
 import java.io.PrintWriter;
 import java.io.Reader;
+import java.io.Writer;
 
 import dmg.cells.nucleus.CellAdapter;
 import dmg.cells.nucleus.CellMessage;
@@ -77,7 +78,7 @@ public DCapDoor( String name , StreamEngine engine , Args args )
 	   _engine   = engine;
 	   _reader   = engine.getReader();
 	   _in       = new BufferedReader( _reader );
-	   _out      = new PrintWriter( engine.getWriter() );
+	   _out      = new PrintWriter(engine.getWriter(), true);
             _subject = engine.getSubject();
 	   _host     = engine.getInetAddress().toString();
 
@@ -350,8 +351,7 @@ public void   cleanUp(){
 
     private synchronized void println( String str ){
         _log.info( "toclient(println) : "+str ) ;
-	_out.println( str );
-	_out.flush();
+	_out.println(str);
     }
 
     private int execute( VspArgs args ) throws Exception {

modules/dcache-dcap/src/main/java/diskCacheV111/doors/DCapDoorInterpreterV3.java

@@ -409,14 +409,7 @@ private void installVersionRestrictions( String versionString ){
     }
     public synchronized void println( String str ){
         _log.debug("(DCapDoorInterpreterV3) toclient(println) : {}", str);
-        _out.println( str );
-        _out.flush();
-    }
-
-    public synchronized void print( String str ){
-        _log.debug("(DCapDoorInterpreterV3) toclient(print) : {}", str);
-        _out.print( str );
-        _out.flush();
+        _out.println(str);
     }
 
     @Override