Coin TestSuite build failure with CMake installed by Vcpkg

[kazssym]

I had been struggling with some link errors of the Coin test suite with CMake installed by Vcpkg on Windows, but recently figured out the cause.

CMake was installed with <boost/config/user.hpp> that implicitly defines BOOST_ALL_DYN_LINK, which causes link errors in the test suite. To avoid the problem with those problematic definitions, we need to define BOOST_NO_USER_CONFIG on the command line.

I wish it had been documented clearly in the build instructions or, hopefully, detected automatically by the build scripts.