PPC: [regexp] correctly advance zero length matches for global/unicode.

PPC: [regexp] correctly advance zero length matches for global/unicode.

Port  57d202d879dbf7589a7d2c1466b2698d3a2d9c21

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:2952
LOG=N

Committed: https://crrev.com/510f4a9b8f836de4e49f08bd044a8f49b8038f51
Cr-Commit-Position: refs/heads/master@{#33566}

[MTBrandyberry, 2016-01-27 19:16:10]

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

[commit-bot: I haz the power, 2016-01-27 19:16:21]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1646613002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1646613002/1

[commit-bot: I haz the power, 2016-01-27 19:56:58]

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

[commit-bot: I haz the power, 2016-01-27 19:56:59]

Dry run: This issue passed the CQ dry run.

[john.yan, 2016-01-27 20:59:53]

lgtm

[MTBrandyberry, 2016-01-27 21:04:02]

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

[commit-bot: I haz the power, 2016-01-27 21:04:05]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1646613002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1646613002/1

[commit-bot: I haz the power, 2016-01-27 21:07:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-01-27 21:07:37]

Description was changed from

==========
PPC: [regexp] correctly advance zero length matches for global/unicode.

Port  57d202d879dbf7589a7d2c1466b2698d3a2d9c21

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:2952
LOG=N
==========

to

==========
PPC: [regexp] correctly advance zero length matches for global/unicode.

Port  57d202d879dbf7589a7d2c1466b2698d3a2d9c21

R=yangguo@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com,
michael_dawson@ca.ibm.com
BUG=v8:2952
LOG=N

Committed: https://crrev.com/510f4a9b8f836de4e49f08bd044a8f49b8038f51
Cr-Commit-Position: refs/heads/master@{#33566}
==========

[commit-bot: I haz the power, 2016-01-27 21:07:37]

Patchset 1 (id:??) landed as
https://crrev.com/510f4a9b8f836de4e49f08bd044a8f49b8038f51
Cr-Commit-Position: refs/heads/master@{#33566}