dumpview: allow opening multiple swfs, context menu: expand all and close menu items

show abc and actionbytes in dump view, hexview style fixes
better scroll to view mode in hex editor

src/com/jpexs/decompiler/flash/SWFOutputStream.java

@@ -79,7 +79,6 @@ import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.util.List;
-import java.util.Map;
 import java.util.zip.Deflater;
 import java.util.zip.DeflaterOutputStream;
 
@@ -415,20 +414,12 @@ public class SWFOutputStream extends OutputStream {
      * Writes list of Tag values to the stream
      *
      * @param tags List of tag values
-     * @param tagPositions
-     * @param tagLengths
      * @throws IOException
      */
-    public void writeTags(List<Tag> tags, Map<Tag, Long> tagPositions, Map<Tag, Integer> tagLengths) throws IOException {
+    public void writeTags(List<Tag> tags) throws IOException {
         for (Tag tag : tags) {
-            long pos = getPos();
             tag.writeTag(this);
-            int length = (int) (getPos() - pos);
-            tagPositions.put(tag, pos);
-            tagLengths.put(tag, length);
         }
-
-        // todo: honfika: update tag position and lengths. Currently the 2nd save fails
     }
 
     /**