MIPS: Implement inlined object allocation in Crankshaft.

MIPS: Implement inlined object allocation in Crankshaft.

Port r10881 (0d25c61e).

Original commit message:

Generates inlined code for object allocation specific to the initial map
of the given constructor function. Also forces completion of inobject
slack tracking while crankshafting to finalize instance size of these
objects.

BUG=
TEST=

Committed: https://code.google.com/p/v8/source/detail?r=10890

[Michael Starzinger, 2012-03-01 12:39:19]

LGTM. Landed.

[Michael Starzinger, 2012-03-01 12:48:07]

Accidentally I folded the following CL into the commit for this one.

https://chromiumcodereview.appspot.com/9537004/