PPC: cleanup excludes

PPC: cleanup excludes

Updated excludes to remove SKIPs where possible. Either
removing if no longer needed or replacing with SLOW where
tests just need more time to run

	modified:   test/cctest/cctest.status
	modified:   test/mjsunit/mjsunit.status

R=danno@chromium.org, svenpanne@chromium.org

BUG=

Committed: https://crrev.com/8849c0009544fdab76425807855ec40b62fa6b20
Cr-Commit-Position: refs/heads/master@{#27287}

[michael_dawson, 2015-03-18 20:06:16]

Excludes cleanup for PPC

[Sven Panne, 2015-03-19 07:05:54]

The CQ bit was checked by svenpanne@chromium.org

[Sven Panne, 2015-03-19 07:05:54]

lgtm

[commit-bot: I haz the power, 2015-03-19 07:06:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1017073003/1

[commit-bot: I haz the power, 2015-03-19 07:44:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-19 07:44:53]

Patchset 1 (id:??) landed as
https://crrev.com/8849c0009544fdab76425807855ec40b62fa6b20
Cr-Commit-Position: refs/heads/master@{#27287}