makefiles: Auto-generate the list of all subdirectories too.
diff --git a/configure.ac b/configure.ac
index ed0fa0a..ba54bcd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2098,11 +2098,11 @@
 \$(BISON_SRCS:.y=.tab.o): \$(BISON_SRCS:.y=.tab.c)"])
 
 AC_SUBST(ALL_MAKERULES,"")
-AC_SUBST(ALL_MAKEFILES,"")
 AC_SUBST(ALL_SYMLINKS,"")
 AC_SUBST(ALL_MAKEFILE_DEPENDS,["# Makefile dependencies"])
 AC_SUBST(ALL_WINETEST_DEPENDS,["# Test binaries"])
 
+AC_SUBST(ALL_DIRS,"")
 AC_SUBST(ALL_TOP_DIRS,"")
 AC_SUBST(ALL_DLL_DIRS,"")
 AC_SUBST(ALL_TOOL_DIRS,"")