is_mutex_type<recursive_mutex> is false if BOOST_NO_CXX11_SFINAE_EXPR is defined

This part of the old `has_member_try_lock` implementation fails to match `recursive_mutex::try_lock()` because it's `noexcept`:

https://github.com/boostorg/thread/blob/4abafccff4bdeb4b5ac516ff0c2bc7c0dad8bafb/include/boost/thread/lockable_traits.hpp#L143-L146

The bug is still there in the current code, but hidden by a35ffa3a83e6f74262d66feac66ef5b513c99745 which has a working version that is used by most compilers since Boost 1.69.0

A fix would be to add another partial specialization for `noexcept` functions:

```c++
#ifndef BOOST_NO_CXX11_NOEXCEPT
template
static true_type has_member(bool (U::*)() noexcept);
#endif
```