Implement hypergeometric_distribution as an extension.

[Paolo Carlini]

On 11/22/2013 10:31 AM, Andreas Schwab wrote:
> Ed Smith-Rowland <3dw4rd@verizon.net> writes:
>
>> +void
>> +test01()
>> +{
>> +  using namespace __gnu_test;
>> +
>> +  std::mt19937 eng;
>> +
>> +  __gnu_cxx::hypergeometric_distribution hd1{15, 3, 2};
> libstdc++-v3/testsuite/ext/random/hypergeometric_distribution/operators/values.cc:36:42: error: missing template arguments before 'hd1'
Thanks Andreas, "somebody" forgot to actually test the new testcase. I'm 
fixing this the obvious way.

Paolo.