[thunderbird-lightning/el6] Sync mozconfig with thunderbird

[Orion Poplawski]

commit b1e16ec896168179230384829d2b2b343a6733de
Author: Jan Horak <jhorak at redhat.com>
Date:   Fri Sep 20 11:38:05 2013 +0200

    Sync mozconfig with thunderbird

 thunderbird-mozconfig |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/thunderbird-mozconfig b/thunderbird-mozconfig
index 645b408..c65666e 100644
--- a/thunderbird-mozconfig
+++ b/thunderbird-mozconfig
@@ -11,6 +11,7 @@ ac_add_options --with-system-nspr
 ac_add_options --with-system-nss
 ac_add_options --with-system-jpeg
 ac_add_options --with-system-zlib
+ac_add_options --with-system-libvpx
 ac_add_options --with-pthreads
 ac_add_options --enable-calendar
 ac_add_options --disable-tests