PPC: [ic] Introduce BOOLEAN state for CompareIC.

PPC: [ic] Introduce BOOLEAN state for CompareIC.

Port 10c5f2e85ef92b7ca002ef95e406d5dc4f0c410b

Original commit message:
    Slow path for relational comparison of boolean primitive values
    now goes through the runtime, which made the slow path even
    slower than it already was. So in order to repair the regression,
    we just track boolean feedback for comparisons and use that
    to generate decent code in Crankshaft (not the best possible
    code, but good enough for Crankshaft; TurboFan will be able
    to do better on that).

R=bmeurer@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, dstence@us.ibm.com
BUG=chromium:534200
LOG=n

Committed: https://crrev.com/3028534498c236563f7e426f87f9a5298992eb7f
Cr-Commit-Position: refs/heads/master@{#30871}

[MTBrandyberry, 2015-09-22 18:50:44]

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

[commit-bot: I haz the power, 2015-09-22 18:50:58]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1362683002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1362683002/1

[michael_dawson, 2015-09-22 18:53:44]

On 2015/09/22 18:50:58, commit-bot: I haz the power wrote:
> Dry run: CQ is trying da patch. Follow status at
>  https://chromium-cq-status.appspot.com/patch-status/1362683002/1
> View timeline at
>  https://chromium-cq-status.appspot.com/patch-timeline/1362683002/1

lgtm.

[commit-bot: I haz the power, 2015-09-22 19:35:25]

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

[commit-bot: I haz the power, 2015-09-22 19:35:26]

Dry run: This issue passed the CQ dry run.

[MTBrandyberry, 2015-09-22 19:40:08]

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

[commit-bot: I haz the power, 2015-09-22 19:40:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1362683002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1362683002/1

[commit-bot: I haz the power, 2015-09-22 19:42:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-09-22 19:42:29]

Patchset 1 (id:??) landed as
https://crrev.com/3028534498c236563f7e426f87f9a5298992eb7f
Cr-Commit-Position: refs/heads/master@{#30871}