[v3] Remove algos code duplication

[François Dumont]

Hi

     Here is a patch proposal to remove the duplication of the 
implementation details of many algos thanks to usage of lambdas in C++ 
11 mode. This is what has been experimented in libstdcxx_so_7 branch but 
abandonned, lambdas are the real answer to this problem.

2012-03-22  François Dumont <fdumont@gcc.gnu.org>

         * include/bits/stl_algo.h: Hide in C++ 11 mode implementation
         details made useless thanks to usage of lambdas.
         (__find_if_not): Remove.
         * include/bits/stl_heap.h: Likewise.

Tested undex linux x86_64 with

make check

and

make CXXFLAGS=-std=gnu++11 check

There are some errors building the testsuite entirely in C++11 mode but 
none coming from this patch.

Are you interested ?

François
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