Fix invalid out-of-bounds store in MacroAssembler::Allocate.

Fix invalid out-of-bounds store in MacroAssembler::Allocate.

This fixes an out-of-bounds store in inlined allocations when double
alignment and pretenuring into old-data-space have been requested.

R=hpayer@chromium.org, jkummerow@chromium.org, plind44@gmail.com
BUG=chromium:263515
Committed: http://code.google.com/p/v8/source/detail?r=16224

[Jakob Kummerow, 2013-08-19 17:25:09]

LGTM.

I'd appreciate it if MIPS people could double-check the MIPS changes.

[Hannes Payer (out of office), 2013-08-19 17:25:49]

lgtm

[Paul Lind, 2013-08-19 17:39:06]

MIPS change LGTM, thanks for doing it! Just FYI, 'hs' is an alias for
'Ugreater_equal', either are fine, 'hs' makes it read a bit more like the ARM
port.

[Jakob Kummerow, 2013-08-19 17:41:49]

patch set 2 LGTM

[Michael Starzinger, 2013-08-19 17:46:52]

Committed patchset #2 manually as r16224.

[Paul Lind, 2013-08-19 17:53:16]

Thanks Michael, sorry I missed that typo on first review, it's good now.