Reverting the changes made in r9389

http://code.google.com/p/jmonkeyengine/source/detail?spec=svn9389&r=9389
That caused the StringBlock to be recreated every
time the text was set to "".  Doing this blew away
90% of BitmapText's internal state causing subsequent
text to be the wrong size, misaligned, etc.
The original reason for the change needs to be revisited.
Big comment left in code with the original change commented
out.


git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9765 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/font/BitmapText.java

@@ -112,7 +112,29 @@ public class BitmapText extends Node {
      */
     public void setText(String text) {
         text = text == null ? "" : text;
-        if (!block.getText().equals(text)) {
+
+        if (text == block.getText() || block.getText().equals(text)) { 	
+            return;
+        }
+
+        /*
+        The problem with the below block is that StringBlock carries
+        pretty much all of the text-related state of the BitmapText such
+        as size, text box, alignment, etc.
+        
+        I'm not sure why this change was needed and the commit message was
+        not entirely helpful because it purports to fix a problem that I've 
+        never encountered.
+        
+        If block.setText("") doesn't do the right thing then that's where
+        the fix should go because StringBlock carries too much information to
+        be blown away every time.  -pspeed
+        
+        Change was made:
+        http://code.google.com/p/jmonkeyengine/source/detail?spec=svn9389&r=9389
+        Diff:
+        http://code.google.com/p/jmonkeyengine/source/diff?path=/trunk/engine/src/core/com/jme3/font/BitmapText.java&format=side&r=9389&old_path=/trunk/engine/src/core/com/jme3/font/BitmapText.java&old=8843
+        
         // If the text is empty, reset
         if (text.isEmpty()) {
             detachAllChildren();
@@ -125,18 +147,16 @@ public class BitmapText extends Node {
             block = new StringBlock();
             letters = new Letters(font, block, letters.getQuad().isRightToLeft());
         }
+        */
             
         // Update the text content
         block.setText(text);
         letters.setText(text);
 
-            // Flat for refresh
+        // Flag for refresh
         needRefresh = true;
     }
 
-
-    }
-
     /**
      * @return returns text
      */