For using Pelles C v12 headers with Clang
Small change to winnt.h to avoid errors using #ifndef __llvm__ at line 594#ifndef __llvm__
unsigned __int32 __cdecl _rotl32(unsigned __int32, unsigned __int8);
unsigned __int64 __cdecl _rotl64(unsigned __int64, unsigned __int8);
unsigned __int32 __cdecl _rotr32(unsigned __int32, unsigned __int8);
unsigned __int64 __cdecl _rotr64(unsigned __int64, unsigned __int8);
#endif
CRT headers stdio.h and others don't work with other compilers.