Re: [boost] [utility] [config] value_init tests on msvc-14.0, 14.1

But this test is much more comprehensive than the value_init one. So to fix the value_init_workaround_test.cpp failure, we need to at minimum move one failing test case from the Config test to the value_init one.

OK, done. This is what MSVC still gets wrong: https://github.com/boostorg/utility/commit/51ba9f1b4568dd0c22bef3c9820da48f9...