Fixes installation with Emacs 23 where only a single vm.info file is created.

--- vm-7.19-orig/Makefile	2003-03-31 01:51:43.000000000 +0200
+++ vm-7.19/Makefile	2009-09-10 09:46:23.000000000 +0200
@@ -115,7 +115,7 @@
 
 install-info: vm.info
 	test -d $(INFODIR) || mkdir -p $(INFODIR)
-	cp vm.info vm.info-* $(INFODIR)
+	cp vm.info* $(INFODIR)
 
 install-vm: vm.elc
 	test -d $(LISPDIR) || mkdir -p $(LISPDIR)