Adjust c_src/fast_tls.c so that it can by compiled by MSVC, and specify the required flags for linking (statically) against OpenSSL on Windows using MSVC.
Coverage decreased (-0.5%) to 59.244% when pulling 028cff39c690f64fbffc8c3a63818e54de95fdd2 on weiss:windows into ff20ea100f8f689b1b4d4ea141f99da9de96193a on processone:master.
Adjust
c_src/fast_tls.c
so that it can by compiled by MSVC, and specify the required flags for linking (statically) against OpenSSL on Windows using MSVC.