Tailored light-weight MinGW-w64 C Runtime (on top of Microsoft's Visual C Runtime) to be built by Clang on Win64 and linked to by Microsoft's linker. Enhances the MSVCRT by missing C99 functionality (present in virtually all other C runtimes) and therefore simplifies code portability while allowing you to use common Windows compilers (Microsoft, Intel etc.) and linkers instead of having to rely on MinGW-w64 GCC.