Log Message:
di: update to 4.44.

Provided by Brad Lanam in PR 52770.

    4.44                                    [2017-5-23]
        Fixed check of exabyte sized filesystems.  The signed check now
          only checks for -1 and -2; there could still be situations
          where the overflow exactly matches these values.
        Added faster method for windows check for missing removable
          filesystems.

    4.43                                    [2016-8-9]
        Cleaned up some compiler warnings.
        Fixed memory allocation problem.
        Tcl interface fixes

    4.42                                    [2016-2-22]
        Fixed a parsing bug in the Tcl interface.
        Added a Perl interface.

    4.41                                    [2016-1-24]
        Fixed bug specifying more than one filesystem on the command line.
        Added sort by free space, total space.
        Updated manual page: missing, new sort options.