Bump nacl_revision to 4241.
Bump nacl_revision to 4241.

BUG=none
TEST=native_client/tests with --enable-nacl

Review URL: http://codereview.chromium.org/6306015

git-svn-id: http://src.chromium.org/svn/trunk/src@72768 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 114d7f9b441f8a7e1e0879ce13b7c9632bfe8ccd
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