Make explicit that bumping required tool versions needs thought.
diff --git a/HACKING b/HACKING
index 984152d..958610b 100644
--- a/HACKING
+++ b/HACKING
@@ -1,6 +1,6 @@
-*- mode: text; -*-
-$Id: HACKING,v 1.10 2004/11/05 23:38:20 paul Exp $
+$Id: HACKING,v 1.11 2004/11/15 17:29:11 gdt Exp $
GUIDELINES FOR HACKING ON QUAGGA
@@ -49,6 +49,12 @@
as cvsignore files do not require ChangeLog updates, just a sane commit
message.
+TOOL VERSIONS
+
+Require versions of support tools are listed in INSTALL.quagga.txt.
+Required versions should only be done with due deliberation, as it can
+cause environments to no longer be able to compile quagga.
+
SHARED LIBRARY VERSIONING
[this section is at the moment just gdt's opinion]