Fix compilation errors with libstdc++v3 for AVR target and allow --enable-libstdcxx

[Jonathan Wakely]

On 23/12/16 13:18 -0200, Felipe Magno de Almeida wrote:
>On Fri, Dec 16, 2016 at 10:45 AM, Jonathan Wakely <jwakely@redhat.com> wrote:
>> On 15/12/16 21:41 -0300, Felipe Magno de Almeida wrote:
>>>
>>> Good point. Do you want me to update the patch with __men or go your way
>>> with the wrapper?
>
>Hello Jonathan,
>
>> I think my wrapper's too ugly :-)
>
>:)
>
>> So please follow the same approach as for tm_mon (pass __mem to the
>> function, the copy it to tm_mon if there was no error). That adds a
>> write and a branch for every extracted field, which I hope shouldn't
>> have too much impact.
>
>Please find it attached.

This has now been committed to trunk (with whitespace fixes) - thanks.

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