Merge branch '2781_cleanup' into 4.8.1-stable

Merge branch '2781_cleanup' into 4.8.1-stable

* 2781_cleanup:
  (mc_setup_by_args): fixed memory leaks.
  (reread_cmd): use vfs_path_cmp() to compare dirs.
  (do_load_dir): use vfs_path_t as a path handle.
  README.fish: fixed location of user scripts.
  Use new-style VFS prefixes.
  (nice_cd): use new-style VFS prefixes.
  (input_history_strip_password): actually url is not the pointer to constant.
  (vfs_expare): changed argument type from int to gboolean.
  (vfs_url_split): optimized to get rid of multiple string length caclulation.
  (check_for_default): minor optimization and change return value.
  (resolve_symlinks): use (vfs_path_t *) as argument.
  (tty_draw_box): do nothing if width or heigth of box is less than 1.
  (vfs_path_element_clone): ret rid of extra actions.
  (vfs_get_raw_current_dir): return pointer to constant.
  g_dirname and g_basename function are deprecated since glib-2.2.
  Ticket #2781: cleanup before 4.8.3 release.