Added the FILELIST_SHOWFILES flag for the FXFileList widget, as well the new showOnlyFiles() member functions, to indicate whether a file list should show both directories and files, or files only. As before, the FXFileList shows both directories and files by default.

The FXFileList widget now supports case-sensitive sorting of the directory or file names, in addition to the default of case-insensitive sorting. To toggle between case-sensitive and case-insensitive sorting, you can send a SEL_COMMAND message with identifier FXFileList::ID_SORT_CASE.