Intrinsic __popcnt64 not available on Windows ARM64

[sheldonrobinson]

__popcnt64 not available for Windows on Arm, see ARM64 __popcnt intrinsics #4683 A workaround is found in #72. This is probably also affecting issues #68, #69, #70, and #71.

For Windows on Arm an upstream solution was merged into codebase, see Add MSVC-internal workaround for ARM64 popcount intrinsics #4733.