[src/trunk]: src add a note about xsrc updates.

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/63059df0cc34
branches:  trunk
changeset: 787063:63059df0cc34
user:      mrg <mrg%NetBSD.org@localhost>
date:      Fri May 31 10:39:02 2013 +0000

description:
add a note about xsrc updates.

diffstat:

 UPDATING |  6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diffs (20 lines):

diff -r e89f678d21c5 -r 63059df0cc34 UPDATING
--- a/UPDATING  Fri May 31 09:33:17 2013 +0000
+++ b/UPDATING  Fri May 31 10:39:02 2013 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.243 2013/03/02 08:51:42 christos Exp $
+$NetBSD: UPDATING,v 1.244 2013/05/31 10:39:02 mrg Exp $
 
 This file (UPDATING) is intended to be a brief reference to recent
 changes that might cause problems in the build process, and a guide for
@@ -16,6 +16,10 @@
 Recent changes:
 ^^^^^^^^^^^^^^^
 
+20130530:
+       Updates of many xsrc packages will leave old .pc files around.
+       Best to clean out the xsrc objdir entirely before rebuilds.
+
 20130301:
        The removal of netiso requires manual removal of /usr/include/netiso
        prior to the build and make cleandir in /usr/src/usr.bin/{ktruss,kdump}