[google] Add support for delete operator that takes the size of the object as a parameter

[Paolo Carlini]

On 12/12/2011 02:21 PM, Diego Novillo wrote:
> Ah, right. I missed the ABI implications. 
For possible inclusion in mainline too, things don't seem completely ok: 
nothing should be added to the baseline and very likely the export 
should be adjusted to accommodate for different size_t on the various 
targets, by using [] in the pattern. See, eg, the existing operator 
new[](size_t).

Paolo.