required for PATH_MAX

diff -Nur linux-2.6.17.1.orig/scripts/mod/sumversion.c linux-2.6.17.1/scripts/mod/sumversion.c
--- linux-2.6.17.1.orig/scripts/mod/sumversion.c	Thu Jun 22 22:22:44 2006
+++ linux-2.6.17.1/scripts/mod/sumversion.c	Thu Jun 22 22:22:04 2006
@@ -4,6 +4,7 @@
 #else
 #include <stdint.h>
 #endif
+#include <limits.h>
 #include <ctype.h>
 #include <errno.h>
 #include <string.h>