patch 8.2.1269: language and locale code spread out

Problem:    Language and locale code spread out.
Solution:   Move relevant code to src/locale.c. (Yegappan Lakshmanan,
            closes #6509)
diff --git a/src/Makefile b/src/Makefile
index bac4e12..8ac7dc5 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1647,6 +1647,7 @@
 	insexpand.c \
 	json.c \
 	list.c \
+	locale.c \
 	main.c \
 	map.c \
 	mark.c \
@@ -1798,6 +1799,7 @@
 	objects/indent.o \
 	objects/insexpand.o \
 	objects/list.o \
+	objects/locale.o \
 	objects/map.o \
 	objects/mark.o \
 	objects/match.o \
@@ -1973,6 +1975,7 @@
 	insexpand.pro \
 	json.pro \
 	list.pro \
+	locale.pro \
 	main.pro \
 	map.pro \
 	mark.pro \
@@ -3378,6 +3381,9 @@
 objects/list.o: list.c
 	$(CCC) -o $@ list.c
 
+objects/locale.o: locale.c
+	$(CCC) -o $@ locale.c
+
 objects/main.o: main.c
 	$(CCC) -o $@ main.c
 
@@ -3968,6 +3974,10 @@
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
  proto.h globals.h
+objects/locale.o: locale.c vim.h protodef.h auto/config.h feature.h os_unix.h \
+ auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
+ proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
+ proto.h globals.h
 objects/main.o: main.c vim.h protodef.h auto/config.h feature.h os_unix.h \
  auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
  proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \