stage flisp.boot into host

(cherry picked from commit e922744)

Author: vchuravy

src/flisp/Makefile

@@ -107,9 +107,13 @@ $(BUILDDIR)/host/Makefile:
 	@echo 'BUILDING_HOST_TOOLS=1' >> $@
 	@echo 'include $(SRCDIR)/Makefile' >> $@
 
-$(BUILDDIR)/host/$(EXENAME): $(BUILDDIR)/host/Makefile
+$(BUILDDIR)/host/$(EXENAME): $(BUILDDIR)/host/Makefile | ${BUILDDIR}/host/flisp.boot
 	make -C $(BUILDDIR)/host $(EXENAME)
 
+
+$(BUILDDIR)/host/flisp.boot: $(SRCDIR)/flisp.boot | $(BUILDDIR)/host/Makefile
+	cp $< $@
+
 ifneq ($(BUILDDIR),.)
 ifneq ($(BUILDDIR),$(SRCDIR))
 $(BUILDDIR)/flisp.boot: $(SRCDIR)/flisp.boot | $(BUILDDIR)