Reduce warning level in MSVC again since /W4 turns out to be excessive (complains about constant conditionals, for example).
Reduce warning level in MSVC again since /W4 turns out to be excessive (complains about constant conditionals, for example).

scoder/cython,scoder/cython,da-woods/cython,da-woods/cython,cython/cython,scoder/cython,da-woods/cython,scoder/cython,da-woods/cython,cython/cython,cython/cython,cython/cython