patch 8.1.1727: code for viminfo support is spread out

Problem:    Code for viminfo support is spread out.
Solution:   Move to code to viminfo.c. (Yegappan Lakshmanan, closes #4686)
diff --git a/src/Makefile b/src/Makefile
index f4f8cc3..c6c528d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1650,6 +1650,7 @@
 	usercmd.c \
 	userfunc.c \
 	version.c \
+	viminfo.c \
 	window.c \
 	$(OS_EXTRA_SRC)
 
@@ -1769,6 +1770,7 @@
 	objects/usercmd.o \
 	objects/userfunc.o \
 	objects/version.o \
+	objects/viminfo.o \
 	objects/window.o \
 	$(GUI_OBJ) \
 	$(TERM_OBJ) \
@@ -1914,6 +1916,7 @@
 	usercmd.pro \
 	userfunc.pro \
 	version.pro \
+	viminfo.pro \
 	window.pro \
 	beval.pro \
 	gui_beval.pro \
@@ -3298,6 +3301,9 @@
 objects/userfunc.o: userfunc.c
 	$(CCC) -o $@ userfunc.c
 
+objects/viminfo.o: viminfo.c
+	$(CCC) -o $@ viminfo.c
+
 objects/window.o: window.c
 	$(CCC) -o $@ window.c
 
@@ -3746,6 +3752,10 @@
  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 version.h
+objects/viminfo.o: viminfo.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/window.o: window.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 \