re PR libgcc/65038 ([regression 5] Unable to find ftw.h for libgcov-util.c)

re PR libgcc/65038 ([regression 5] Unable to find ftw.h for libgcov-util.c)

        PR target/65038
        * config.in: Regenerated.
        * configure: Likewise.
        * configure.ac (AC_HEADER_STDC): Added explicit.
        (AC_CHECK_HEADERS): Check for default headers  plus
        for ftw.h header.
        * libgcov-util.c (gcov_read_profile_dir): Disable use
        of ftw-function, if header is not found.
        (ftw_read_file): Likewise.

From-SVN: r221059