title: std::to_string not available in header string
body: <p>I am trying to use <code>std::to_string()</code>, of course with <code>#include &lt;string&gt;</code>, but the compiler gives me the error that it was not declared in the scope, after lots of searching I have tried the fixes of going to compiler settings and have <code>g++</code> follow... <code>-std=c++11</code>, 
  downloading 4.7 patch header files for <code>wchar.h</code>, <code>stdio.h</code>, <code>os_defines.h</code>
  and re downloading the latest codeblocks version.</p>
  
  <p>but nothing makes it seem to work.</p>
  
  <p>what settings do I need to change to make this work.</p>
  
  <pre><code>#include &lt;iostream&gt;
  #include &lt;string&gt;
  
  using namespace std;
  int main()
  {
      string s=to_string(10);
      cout &lt;&lt;s&lt;&lt;endl;
      return 0;
  }
  </code></pre>
  
  <p>update: I have re-installed codeblocks,version 13.12 tmd gcc, with gcc version 4.81(tmd-2), I have both -std=c++0 and -std=c++11 flags on in compiler settings,  in Toolchain executables i have c++ compiiler:mingw32-gcc-4.8.1.exe, and it Still does not recognize to_string();</p>