Log Message:
boost: update to 1.65.1

Fixes in 1.65.1
Config:
* Version macro changes for CUDA.
* Update last known MSVC version.
* MSVC 14.11 supports structured bindings.

Context:
* Return a continuation from functions executed by resume_with.

Fiber:
* Return a continuation from functions executed by resume_with.

Smart Pointers:
* Fix Visual C++ version checks.
* Fix compilation for NVCC with host compiler clang.

Stacktrace:
* Update build testing file to detail with a MinGW issue.
* Change preprocessor file extensions to work with the installation system.
* Support FreeBSD and other OSs that do not define _GNU_SOURCE but have \ 
_Unwind_Backtrace function.

Thread:
* Fix bug in boost::condition_variable on Windows