Implement inline runtime function %_SetValueOf for Crankshaft.

Implement inline runtime function %_SetValueOf for Crankshaft.

It is frequently used inside our builtins and is implemented purely
by HIR instructions: a smi check, an instance-type check and an
in-object property store for storing to the value field.
Committed: http://code.google.com/p/v8/source/detail?r=9952

[fschneider, 2011-11-09 19:25:40]

A small review to increase our Crankshaft coverage of builtin-functions.

[Jakob Kummerow, 2011-11-10 09:08:50]

LGTM