Merge branch '2602_cleanup'

Merge branch '2602_cleanup'

* 2602_cleanup:
  (try_complete): fixed warinig:
  (edit_collect_completions): fixed warinig:
  (etags_set_definition_hash): fixed memory leak
  Use ESC_STR macro instead of hardcoded "\033".
  Value accuracy of mouse_enabled global variable.
  Fixed VFS prefix in hints.
  Nice location of red (warning and error) dialogs.
  (dlg_find_by_id): use the GLib way to find widget.
  (move_right): fixed type of return value.
  (menubar_arrange): fixed typos.
  Avoided warning message about non-existent maint/version.sh file
  Minor fixes in NEWS.
  Preventing po/*.po files in git-diff output
  Cleanups and format small fixes in EN and RU man pages.
  Editor: remove unused #define's.
  Optimization of walking in dialog widgets.
  Set logfile for smbfs using mc_setctl().
  (mc_setup_by_args): fixed old VFS prefix.
  (show_datadirs_extended): fixed paths in help message.
  Ticket #2602: cleanup branch