Adding CHECKED_OUT_VERSION to .gitignore.

Adding CHECKED_OUT_VERSION to .gitignore.

Adding CHECKED_OUT_VERSION in test/simdjs so that
the bots don't revert and redownload each time.

LOG=N
BUG=None
TEST=None
R=littledan@chromium.org,machenbach@chromium.org

Committed: https://crrev.com/84a6db99dc262062981d1fdd0e597eaa2628d352
Cr-Commit-Position: refs/heads/master@{#29826}

[Dan Ehrenberg, 2015-07-23 23:35:55]

lgtm

[bradn, 2015-07-24 03:32:19]

The CQ bit was checked by bradnelson@google.com

[commit-bot: I haz the power, 2015-07-24 03:54:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1242863003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1242863003/1

[commit-bot: I haz the power, 2015-07-24 06:16:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-24 06:17:12]

Patchset 1 (id:??) landed as
https://crrev.com/84a6db99dc262062981d1fdd0e597eaa2628d352
Cr-Commit-Position: refs/heads/master@{#29826}

[Michael Achenbach, 2015-07-24 06:59:38]

lgtm

[Michael Achenbach, 2015-07-24 12:55:43]

This seems to work now, thanks!