1. Ensure all broken file names which are not encoded in UTF-8 can be used.
2. Add file alteration monitor. (using gamin)	DONE
3. Some nodes of dir tree are not updated if they contain no files initially,
   but contain files after some file operation.
4. Symlinks cannot be correctly processed.
5. Add "Find files" (using external tools: grep and find)
6. Support user scripts for mime-type handling. (Add user extended options in 
   popup menu for selected files)
7. Open in terminal support.
8. Fix some bugs in GtkTreeModelSort.
9. Extend icon view to be used as desktop icons.
10.VFS implementation. (different backends) LOWEST PRIORITY
11.Bookmark side pane. (Like the one in GtkFileChooser)
12.Make column headers of list view clickable.
13.Add "Find as you type" support in icon view.    DONE
14.Update check menu on switching tab.
15.Update file count in status bar.
