special_math.cpp: Statically linked library contains and depends on Boost symbols

Description
Boost symbols embedded in static library can conflict with user code and/or custom boost installations.

Example 1
In this example one can override behaviour of standard library function using custom boost symbol.

PS G:\dev\test> type .\test.cpp
#include <cmath>
#include <cstdio>

namespace boost::math {
template<typename T>
T zeta(T)
{
    return 0;
}
}

int main()
{
    auto a = boost::math::zeta(10.0);
    auto b = std::riemann_zeta(10.0);
    std::printf("boost = %f\nstd   = %f\n", a, b);
    return 0;
}
PS G:\dev\test> cl -EHsc -std:c++17 -MDd -nologo .\test.cpp
test.cpp
PS G:\dev\test> .\test.exe
boost = 0.000000
std   = 1.000995
PS G:\dev\test> cl -EHsc -std:c++17 -MTd -nologo .\test.cpp
test.cpp
PS G:\dev\test> .\test.exe
boost = 0.000000
std   = 0.000000
PS G:\dev\test> cl
Microsoft (R) C/C++ Optimizing Compiler Version 19.24.28314 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

Playing with different compiler flags I also got following output once:

boost = 1.000995
std   = 1.000995

but I forgot exact combination and wasn't able to reproduce it later.

Example 2
In this example one can link to boost symbols contained in STL.

PS G:\dev\test> type .\test.cpp
#include <cmath>
#include <cstdio>

namespace boost::math {
template<typename T>
T zeta(T);

extern template double zeta<double>(double);
}

int main()
{
    auto a = boost::math::zeta(10.0);
    std::printf("boost = %f\n", a);
    return 0;
}
PS G:\dev\test> cl -EHsc -std:c++17 -MT -nologo .\test.cpp
test.cpp
PS G:\dev\test> .\test.exe
boost = 1.000995
PS G:\dev\test> cl -EHsc -std:c++17 -MD -nologo .\test.cpp
test.cpp
test.obj : error LNK2019: unresolved external symbol "double __cdecl boost::math::zeta<double>(double)" (??$zeta@N@math@boost@@YANN@Z) referenced in function main
test.exe : fatal error LNK1120: 1 unresolved externals

Expected behavior
STL shouldn't expose any third-party symbols to user code in order to avoid conflicts.

Start with special_math.cpp and reproduce both linker examples to inspect which Boost symbols are present in the statically linked library. Compare the static and dynamic cases; done means the STL no longer exposes or provides conflicting Boost symbols in either example.