Fw: [patch] Make std::tr1::shared_ptr thread-safe.

[Paolo Carlini]

Paolo Carlini wrote:

>I will test on 4-way x86_64 and ia64.
>  
>
I can confirm that regtesting is OK on x86 and 4-way x86_64 (mainline)
and 4-way ia64 (4.0).

Paolo.