Some extra decorations

[Paolo Carlini]

Jan Hubicka wrote:
> If it is only for testing purposes, why it gets installed along with
> other libstdc++ headers?
>   
Right. All the allocators in ext in principle can be also used everywhere.
>> The throw_allocator members should be declared inline.
>>     
> Seems so :) Or they should go into some CC file linked into libstdc++
> testsuite.
>   
Some are large, thus not suitable to be declared inline as they are.

Paolo.