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_cyg_ming.mak b/src/Make_cyg_ming.mak
index 203438a..7c7acbd 100644
--- a/src/Make_cyg_ming.mak
+++ b/src/Make_cyg_ming.mak
@@ -601,6 +601,7 @@
 	$(OUTDIR)/getchar.o \
 	$(OUTDIR)/hardcopy.o \
 	$(OUTDIR)/hashtab.o \
+	$(OUTDIR)/json.o \
 	$(OUTDIR)/main.o \
 	$(OUTDIR)/mark.o \
 	$(OUTDIR)/memfile.o \