Math don't compile with STLport 5.2.1

[Andrey Semashev]

While compiling Boost.Math with STLport on Linux (GCC 4.3.2) I get the following errors:

gcc.compile.c++ bin.v2/libs/math/build/gcc-4.3.2/release/stdlib-stlport/threading-multi/sph_legendre.o             
In file included from ./boost/math/special_functions/trunc.hpp:15,                                                 
                 from ./boost/math/special_functions/gamma.hpp:35,                                                 
                 from ./boost/math/special_functions/factorials.hpp:13,                                            
                 from ./boost/math/special_functions/legendre.hpp:15,                                              
                 from ./boost/math/special_functions/spherical_harmonic.hpp:14,                                    
                 from libs/math/build/../src/tr1/sph_legendre.cpp:8:                                               
./boost/math/special_functions/fpclassify.hpp: In function ‘bool boost::math_detail::is_nan_helper(T, const boost::true_type&)’:
./boost/math/special_functions/fpclassify.hpp:98: error: ‘fpclassify’ is not a member of ‘stlp_std’                             
./boost/math/special_functions/fpclassify.hpp: In function ‘int boost::math::detail::fpclassify_imp(T, const boost::math::detail::native_tag&)’:
./boost/math/special_functions/fpclassify.hpp:120: error: ‘fpclassify’ is not a member of ‘stlp_std’                                            
./boost/math/special_functions/fpclassify.hpp: In function ‘bool boost::math::detail::isfinite_impl(T, const boost::math::detail::native_tag&)’:
./boost/math/special_functions/fpclassify.hpp:262: error: ‘isfinite’ is not a member of ‘stlp_std’                                              
./boost/math/special_functions/fpclassify.hpp: In function ‘bool boost::math::detail::isnormal_impl(T, const boost::math::detail::native_tag&)’:
./boost/math/special_functions/fpclassify.hpp:321: error: ‘isnormal’ is not a member of ‘stlp_std’                                              
./boost/math/special_functions/fpclassify.hpp: In function ‘bool boost::math::detail::isinf_impl(T, const boost::math::detail::native_tag&)’:   
./boost/math/special_functions/fpclassify.hpp:380: error: ‘isinf’ is not a member of ‘stlp_std’                                                 
./boost/math/special_functions/fpclassify.hpp: In function ‘bool boost::math::detail::isnan_impl(T, const boost::math::detail::native_tag&)’:   
./boost/math/special_functions/fpclassify.hpp:456: error: ‘isnan’ is not a member of ‘stlp_std’                                                 

I get similar errors when compiling branches/release.

[John Maddock]

(In [50504]) Reconfigure STLPort. Fixes #2631.