Most of keybind names are changed to unify that names.
Details see in doc/keybind-migration.txt file.
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Added doc/keybind-migration.txt file to describe new keybinding names
used in mc.keymap.* files in 4.8.x series.
Cosmetics: reordering of keymap section declarations to provide identical
order totally in the source tree.
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>