Merge pull request #96 from Flamefire/test-link-update

Update Link to regression test matrix in README

Merge pull request #96 from Flamefire/test-link-update

Update Link to regression test matrix in README

Added a workaround for CompareObjectHandles on older MinGW-w64.

CompareObjectHandles declaration is missing in MinGW-w64 headers before 9.0.0,
although library exports seem to be present since 6.0.0.

Fixed leftover Signature type.

Fixed leftover Signature type.

Fixed leftover Signature type.

Fixed leftover Signature type.

Added BOOST_USE_WINAPI_VERSION CMake option.

This allows users to specify BOOST_USE_WINAPI_VERSION in the CMake command
line to select the Windows version for Boost to target.

Requested in boostorg/cmake#63.

Added BOOST_USE_WINAPI_VERSION CMake option.

This allows users to specify BOOST_USE_WINAPI_VERSION in the CMake command
line to select the Windows version for Boost to target.

Requested in boostorg/cmake#63.

Limit Cygwin and Cygwin64 on AppVeyor to Windows 8.1 APIs.

It appears that Cygwin and Cygwin64 installations on AppVeyor CI are
outdated and do not provide Windows 10 APIs. A more recent version
installed locally does support Windows 10 and passes tests.