I have just enhancd the HTTP Javadoc file system to change its display name to 
show its state at it retrieves its structure from the web server.  During the 
time the FS is scanning, the name should change to "URL (scanning...)," and 
when it is done, it should revert back to just the URL.

When I first made these changes, I noticed the UI wasn't reacting to the 
property event changes I was firing for PROP_DISPLAY_NAME.  I modified 
org.openide.code.RootFolderNode to change its display name on PROP_DISPLAY_NAME 
changes instead of PROP_SYSTEM_NAME changes, (which itself already fires a 
PROP_DISPLAY_NAME change event).

After I made this change, the UI appeared to be working correctly.  
Unfortunately, I discovered after I checked in my change that it was only 
working intermittently.

In addition, when the FS fires two PROP_DISPLAY_NAME change events during its 
initialization, the FS doesn't appear in the UI until after it's done scanning 
the web server.  If I remove the second property change event during 
initialization, it appears immediately when it is mounted as it had before.

I have checked in the HTTP Javadoc file system code that is demonstrating this 
problem.  When the FS is first mounted, it should appear with the name of the 
URL that was mounted.  Immediately after that, the name should change to "URL 
(scanning...)" when it begins scanning the web server, and then change back 
when it is done.  The name should also change when the user selects "Refresh 
File System" from the context menu and the web server is rescanned.

If after looking at this, you see something I've done incorrectly in the FS 
code, please let me know.