[PATCH][libstdc++-v3 parallel mode] Resolve namespace ambiguities

[Johannes Singler]

Paolo Carlini wrote:
> ... for the record, it looks like you attached the 4_4-branch, not
> mainline as I expected, version of the patch: I didn't notice at first,

I attached both versions, but only one ChangeLog entry.

> but actually all those un-uglified names do not exist anymore in
mainline ;)

They do (since they are the public std:: names of the functions).  The
only exception is parallel_partial_sum_linear, for which I had abridged
the ChangeLog entry.

Committed.

Johannes