Revert of Clean up aligned allocation code in preparation for SIMD alignments.

Revert of Clean up aligned allocation code in preparation for SIMD alignments. (patchset #14 id:300001 of https://codereview.chromium.org/1150593003/)

Reason for revert:
Breaks mjsunit, webkit, mozilla, benchmarks.

TBR=hpayer@chromium.org

Original issue's description:
> Clean up aligned allocation code in preparation for SIMD alignments.
>
> Moves alignment fill calculations into two static Heap methods.
> Adds a Heap method to handle the complex case where filler is potentially needed before and after a heap object.
> Makes DoubleAlignForDeserialization explicitly fill after an already
> aligned object.
>
> LOG=N
> BUG=v8:4124
>
> Committed: https://crrev.com/fcfb080eb9a637f0ae066bed4c45095e60df8a84
> Cr-Commit-Position: refs/heads/master@{#28687}

TBR=hpayer@chromium.org,bmeurer@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4124
Committed: https://crrev.com/3ee926e2a6a973712022bc023f0f8129f3fd1f06
Cr-Commit-Position: refs/heads/master@{#28688}

[bbudge, 2015-05-28 17:57:07]

Created Revert of Clean up aligned allocation code in preparation for SIMD
alignments.

[commit-bot: I haz the power, 2015-05-28 17:57:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1159123002/1

[commit-bot: I haz the power, 2015-05-28 17:57:21]

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

[commit-bot: I haz the power, 2015-05-28 17:57:22]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[bbudge, 2015-05-28 18:06:59]

The CQ bit was checked by bbudge@chromium.org

[commit-bot: I haz the power, 2015-05-28 18:07:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1159123002/1

[commit-bot: I haz the power, 2015-05-28 18:07:11]

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

[commit-bot: I haz the power, 2015-05-28 18:07:12]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer,
_not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[jochen (gone - plz use gerrit), 2015-05-28 18:17:11]

jochen@chromium.org changed reviewers:
+ jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-05-28 18:17:11]

The CQ bit was checked by jochen@chromium.org

[jochen (gone - plz use gerrit), 2015-05-28 18:17:11]

lgtm

[commit-bot: I haz the power, 2015-05-28 18:17:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1159123002/1

[commit-bot: I haz the power, 2015-05-28 18:17:50]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-28 18:19:16]

Patchset 1 (id:??) landed as
https://crrev.com/3ee926e2a6a973712022bc023f0f8129f3fd1f06
Cr-Commit-Position: refs/heads/master@{#28688}