scandirstr.h include a relative path that goes outside of source dir

[M95D]

#include "../../jwmtools/s/s.h"
is wrong. It goes outside of the source directory (that would be "jwmtools") and then re-enters it.
But jwmtools is NOT the source directory if the user downloaded the zip file from this github page. The source dir in that case would be "jwmtools-master" and the include fails to re-enter the source directory.

That line should be:
#include "../s/s.h"