set max sizes on the pools

Author: erh

src/main/com/mongodb/ByteDecoder.java

@@ -49,7 +49,7 @@ protected void done(){
         _pool.done( this );
     }
 
-    final static SimplePool<ByteDecoder> _pool = new SimplePool<ByteDecoder>( "ByteDecoders" , NUM_ENCODERS * 3 , -1 ){
+    final static SimplePool<ByteDecoder> _pool = new SimplePool<ByteDecoder>( "ByteDecoders" , NUM_ENCODERS * 3 , NUM_ENCODERS * 6 ){
 
         protected ByteDecoder createNew(){
 	    if ( D ) System.out.println( "creating new ByteDecoder" );

src/main/com/mongodb/ByteEncoder.java

@@ -99,7 +99,7 @@ protected void done(){
         _pool.done( this );
     }
 
-    final static SimplePool<ByteEncoder> _pool = new SimplePool<ByteEncoder>( "ByteEncoders" , NUM_ENCODERS , -1 ){
+    final static SimplePool<ByteEncoder> _pool = new SimplePool<ByteEncoder>( "ByteEncoders" , NUM_ENCODERS , NUM_ENCODERS * 2 ){
             protected ByteEncoder createNew(){
 		if ( D ) System.out.println( "creating new ByteEncoder" );
                 return new ByteEncoder();