Merge pull request #789 from trcrsired/master

Add dos path

Author: trcrsired

include/fast_io_hosted.h

@@ -70,6 +70,9 @@ freestanding ones.
 #endif
 
 #if !defined(__AVR__)
+#if defined(__MSDOS__)
+#include "fast_io_dsal/string.h"
+#endif
 #include "fast_io_hosted/platforms/native.h"
 #include "fast_io_hosted/file_loaders/impl.h"
 #include "fast_io_hosted/wrapper.h"