Ticket #1460 (shared search history)
* The sample of the containing text by file search;
* The sample of search in file mcview;
* The sample of search in mcedit (search operation);
* The substituting text in mceditor (replacement operation).
Author: Alexey Korop
Signed-off-by: Ilia Maslakov <il.smind@gmail.com>
Editor: search will continue from last search string if SHIFT+F7 hotkey pressed
at first time (without pressed F7 key).
Signed-off-by: Slava Zanko <slavazanko@gmail.com>
add const MC_HISTORY_SHARED_SEARCH into history.h
Signed-off-by: Ilia Maslakov <il.smind@gmail.com>