patch 8.1.1785: map functionality mixed with character input

Problem:    Map functionality mixed with character input.
Solution:   Move the map functionality to a separate file. (Yegappan
            Lakshmanan, closes #4740)  Graduate the +localmap feature.
diff --git a/Filelist b/Filelist
index d4d390c..0246ac7 100644
--- a/Filelist
+++ b/Filelist
@@ -60,6 +60,7 @@
 		src/keymap.h \
 		src/macros.h \
 		src/main.c \
+		src/map.c \
 		src/mark.c \
 		src/mbyte.c \
 		src/memfile.c \
@@ -199,6 +200,7 @@
 		src/proto/json.pro \
 		src/proto/list.pro \
 		src/proto/main.pro \
+		src/proto/map.pro \
 		src/proto/mark.pro \
 		src/proto/mbyte.pro \
 		src/proto/memfile.pro \