Update default version of devenv packages
Update default version of devenv packages

This updates the prebuilt packages to incldue the the
following revisions:
 https://chromium.googlesource.com/external/naclports/+log/08102c6..4255d10

R=bradnelson@google.com

Review URL: https://codereview.chromium.org/1043393004

yeyus/naclports,yeyus/naclports,yeyus/naclports,yeyus/naclports,yeyus/naclports,yeyus/naclports