Fix for building with GNU Make 3.82

--- ./Makefile	2009-05-10 20:50:48.000000000 +0200
+++ ./Makefile.new	2013-10-01 14:18:13.799812915 +0200
@@ -174,7 +174,7 @@ INSTALL := $(BINFILES) $(MANFILES)
 # want this rule first, use := on ALL, and ALL not filled in yet
 all: do_all
 
--include */module.mk
+-include proc/module.mk ps/module.mk
 
 do_all:    $(ALL)