Fixed a bug in the recently-added save-mode FileDlg file extension code.  The extension is no longer added to filenames that already end with the extension.
Fixed a bug in the recently-added save-mode FileDlg file extension code.  The
extension is no longer added to filenames that already end with the extension.


tzlaine/GG,tzlaine/GG,tzlaine/GG,tzlaine/GG