Libvpx waterfall additional changes. The CL http://review.webrtc.org/595005/ was not complete since it didn't put the libvpx waterfall at its own port.

Chrome bots are now using the correct scheduler.
Created separate watchlist e-mail for libvpx builds to avoid spamming WebRTC when these builds fail.

BUG=None
TEST=Tested on local master and slaves.

Review URL: https://webrtc-codereview.appspot.com/620004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2331 4adac7df-926f-26a2-2b94-8c16560cd09d

tools/continuous_build/build_internal/scripts/webrtc_buildbot/utils.py

@@ -7,8 +7,6 @@
 #  in the file PATENTS.  All contributing project authors may
 #  be found in the AUTHORS file in the root of the source tree.
 
-__author__ = 'kjellander@webrtc.org (Henrik Kjellander)'
-
 import ntpath
 import os
 import posixpath