message: Workaround for clang include undefining strcasecmp
diff: #ifdef ISPC_HOST_IS_WINDOWS
  #include <io.h>
  #include <windows.h>
  -#define strcasecmp stricmp
  #endif
  #include <clang/Basic/TargetInfo.h>
  #endif
  #endif
  +#ifdef ISPC_HOST_IS_WINDOWS
  +// Note that this define must be after clang includes, as they undefining this symbol.
  +#define strcasecmp stricmp
  +#endif
  +
  using namespace ispc;
  /*! list of files encountered by the parser. this allows emitting of
  