[VCRUNTIME] Move compiler runtime headers into their own folder

These headers come with the MS compiler. Some of them are standard, like emmintrin.h, others are MS specific like crtdefs.h
This separation will allow using MS CRT headers. Eventually it can allow compiling with the compilers' runtime headers.

sdk/include/vcruntime/setjmpex.h

@@ -0,0 +1,25 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within this package.
+ */
+#ifndef _INC_SETJMPEX
+#define _INC_SETJMPEX
+
+#ifndef _WIN32
+#error Only Win32 target is supported!
+#endif
+
+#if (defined(_X86_) && !defined(__x86_64))
+  __declspec(noreturn) __MINGW_NOTHROW void __cdecl _longjmpex(jmp_buf _Buf,int _Value);
+#define setjmp _setjmp
+#define longjmp _longjmpex
+#else
+#ifdef setjmp
+#undef setjmp
+#endif
+#define setjmp _setjmpex
+#endif
+
+#include <setjmp.h>
+#endif