tests: explicitly load msvcrt.dll on sbcl/win32
tests: explicitly load msvcrt.dll on sbcl/win32

attila-lendvai/cffi,cffi/cffi,cffi/cffi,akovalenko/cffi,kingcheez/cffi-cheez,cffi/cffi,wesen/cffi,kingcheez/cffi-cheez,stassats/cffi,attila-lendvai/cffi,kingcheez/cffi-cheez,akovalenko/cffi,dochang/cffi,wesen/cffi,3b/cffi,akovalenko/cffi,mcna/cffi,3b/cffi,dochang/cffi,marsijanin/cffi,dkochmanski/cffi,stassats/cffi,3b/cffi,stassats/cffi,wesen/cffi,marsijanin/cffi,mcna/cffi,dochang/cffi,marsijanin/cffi,dkochmanski/cffi,dkochmanski/cffi