Mark scons.py executable.
Mark scons.py executable.


git-svn-id: http://src.chromium.org/svn/trunk/src@323 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 48cb8d75c71ee04f4f5307deeea55b7374b6ae37
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser