* Add explicit tests around use of `scoped_allocator_adaptor` to emulate issue https://github.com/boostorg/unordered/issues/22
* Refine test to only run in C++11 mode and later with possibility of re-introducing C++03 support later
* Update test to use `<boost/cstdint.hpp>`
* Refactor test to use `UNORDERED_AUTO_TEST`
* Cleanup how the scoped allocator test is conditionally compiled
* Update test to generate a UUID for the name of the shared memory segment so tests can run safely in parallel
* Update test jamfile to relocate the Filesystem link dependency directly to the test that requires it
