patch 7.4.1154
Problem:    No support for JSON.
Solution:   Add jsonencode() and jsondecode().  Also add v:false, v:true,
            v:null and v:none.
diff --git a/src/Make_ivc.mak b/src/Make_ivc.mak
index a891a97..2dbe957 100644
--- a/src/Make_ivc.mak
+++ b/src/Make_ivc.mak
@@ -229,6 +229,7 @@
 	"$(INTDIR)/getchar.obj" \
 	"$(INTDIR)/hardcopy.obj" \
 	"$(INTDIR)/hashtab.obj" \
+	"$(INTDIR)/json.obj" \
 	"$(INTDIR)/main.obj" \
 	"$(INTDIR)/mark.obj" \
 	"$(INTDIR)/mbyte.obj" \
@@ -555,6 +556,10 @@
 # End Source File
 # Begin Source File
 
+SOURCE=.\json.c
+# End Source File
+# Begin Source File
+
 SOURCE=.\main.c
 # End Source File
 # Begin Source File