[c++0x] std::thread fixes

[Benjamin Kosnik]

> Sure, this just adds the move ops and renames the member functions, it
> doesn't change the type names __thread_data_base, __thread_data or
> __thread_data_ptr.

Thanks for doing this.


>         * include/std/thread (__thread_data_base, thread): Rename
> member functions to match coding style.
>         (thread::thread,thread::operator=): Define move operations.
>         * src/thread.cc (__thread_data_base, thread): Rename member
> functions.
>         * config/abi/pre/gnu.ver: Adjust.
> 
> tested x86_64 linux

This is ok: please check it in.

-benjamin