Merge branch 'js/windows'

* js/windows: Do not use date.c:tm_to_time_t() from compat/mingw.c MSVC: Windows-native implementation for subset of Pthreads API MSVC: Fix an "incompatible pointer types" compiler warning Windows: avoid the "dup dance" when spawning a child process Windows: simplify the pipe(2) implementation Windows: boost startup by avoiding a static dependency on shell32.dll Windows: disable Python