Fsutils

Added fs_slice and fs_slice_subjects for creating images from volumes.

Added fsutils package.

CHANGES:

Updating all changes to reflect scripts.

fs_status:

Fixed help string.

fs_status:

Fixed a bug recording the error status in running cases.

Added R (running), SN (step number), STEPNAME, STEPTSTART,
and STEPTRUN fields.

Added the dash flag for printing placeholders for empty values.

fs_status:

Added support for user-specified output ordering.

fs_status:

Added support for user-specified output fields.

fs_status:

Fixed a deprecation warning.

Added support for header suppression (-H).

Tweaked the program description string.

fs_status:

Fixed a bug in subject error reporting.

Accommodating lines of "\n\n" in recon-all.log between runs.