Stop adapting the arguments passed to the builtin implementations...

Stop adapting the arguments passed to the builtin implementations
of Array.prototype.push and Array.prototype.pop. Avoid going 
through the arguments adaptor trampoline for call ICs that end
up calling a builtin that does not need arguments adaption.

Committed: http://code.google.com/p/v8/source/detail?r=312

[Mads Ager (chromium), 2008-09-16 07:23:33]

This looks great to me!