patch 8.1.1869: code for the argument list is spread out

Problem:    Code for the argument list is spread out.
Solution:   Put argument list code in arglist.c. (Yegappan Lakshmanan,
            closes #4819)
diff --git a/src/Make_mvc.mak b/src/Make_mvc.mak
index 07ea52a..56dabe9 100644
--- a/src/Make_mvc.mak
+++ b/src/Make_mvc.mak
@@ -712,6 +712,7 @@
 
 OBJ = \
 	$(OUTDIR)\arabic.obj \
+	$(OUTDIR)\arglist.obj \
 	$(OUTDIR)\autocmd.obj \
 	$(OUTDIR)\beval.obj \
 	$(OUTDIR)\blob.obj \
@@ -1433,6 +1434,8 @@
 
 $(OUTDIR)/arabic.obj:	$(OUTDIR) arabic.c  $(INCL)
 
+$(OUTDIR)/arglist.obj:	$(OUTDIR) arglist.c  $(INCL)
+
 $(OUTDIR)/autocmd.obj:	$(OUTDIR) autocmd.c  $(INCL)
 
 $(OUTDIR)/beval.obj:	$(OUTDIR) beval.c  $(INCL)
@@ -1744,6 +1747,7 @@
 # End Custom Build
 proto.h: \
 	proto/arabic.pro \
+	proto/arglist.pro \
 	proto/autocmd.pro \
 	proto/blob.pro \
 	proto/blowfish.pro \