Move std::function implementation out of Lib/typemaps directory noting
that there are no typemaps for the implementation.
Rename _SWIG_call_std_function to SWIG_call_std_function to be standards
compliant.
Remove redundant %rename in cpp11_std_function testcase.
Add java and python runtime tests based on javascript test for cpp11_std_function testcase.
Add some observations on specialization bug when using std::function.
William S Fulton