[babl] build/buildbot: Supress AM_PROG_LIBTOOL warning with autoconf 2.68

[Martin Nordholts <martinn src gnome org>]

commit acbb0a9400a8e70d15b3267eafa8451471edb759
Author: Martin Nordholts <martinn src gnome org>
Date:   Wed Sep 29 22:19:46 2010 +0200

    build/buildbot: Supress AM_PROG_LIBTOOL warning with autoconf 2.68

 build/buildbot/suppressed-warnings.txt |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/build/buildbot/suppressed-warnings.txt b/build/buildbot/suppressed-warnings.txt
index d257a71..ed7082a 100644
--- a/build/buildbot/suppressed-warnings.txt
+++ b/build/buildbot/suppressed-warnings.txt
@@ -2,6 +2,8 @@
 
 # These doesn't seem like important warnings, we typically get them
 # during make distcheck when the test install is performed
-
 :    ^libtool: install: warning: relinking `.*'$
 :    ^libtool: install: warning: remember to run `libtool --finish .*_inst.*'$
+
+# Comes from AM_PROG_LIBTOOL, not much we can do
+:    ^configure.ac:105: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body$