PPC64: Implemented the Word64Popcnt TurboFan operator.

PPC64: Implemented the Word64Popcnt TurboFan operator.

R=ahaas@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=

Committed: https://crrev.com/d151feeb37c2781373eda218864d1397807deddd
Cr-Commit-Position: refs/heads/master@{#31931}

[MTBrandyberry, 2015-11-10 21:22:10]

The CQ bit was checked by mbrandy@us.ibm.com to run a CQ dry run

[commit-bot: I haz the power, 2015-11-10 21:22:13]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1413833013/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1413833013/1

[commit-bot: I haz the power, 2015-11-10 21:41:10]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-11-10 21:41:11]

Dry run: This issue passed the CQ dry run.

[michael_dawson, 2015-11-10 22:38:33]

On 2015/11/10 21:41:11, commit-bot: I haz the power wrote:
> Dry run: This issue passed the CQ dry run.

lgtm

[MTBrandyberry, 2015-11-10 23:04:25]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-11-10 23:04:38]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1413833013/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1413833013/1

[commit-bot: I haz the power, 2015-11-10 23:05:56]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-11-10 23:06:33]

Patchset 1 (id:??) landed as
https://crrev.com/d151feeb37c2781373eda218864d1397807deddd
Cr-Commit-Position: refs/heads/master@{#31931}