[BUG][FIX] in FileList2 ( [et] ChangeSet works as documented in 3.7 #5763 )

[hoanga at mac.com]

Tested on Win32 VM 3.6.2 Image 3.7 5763

The changeset adds the features that are documented in this
bug.  Without the changeset the behavior described in the
bug occurs.

Test details
------------
Filed in changeset from BFAV.   Tested
the following:
1. Evaluated FileList2 morphicView openInWorld and entered in search
patterns in the top left pain.  It correctly searched for files
beginning
with sq* and also for files *.st
2. Evaluated FileList2 morphicViewImageViewer and browsed for
    an image file on the hard disk.  Loaded the image from FileList2 
    image browser.   The image loaded itself into World.