REVIEW: Improve xfs_io and xfs_quota -c handling

["Barry Naujok" <bnaujok@xxxxxxx>]

xfs_io and xfs_quota's -c option handling is not very good
for "global" commands which don't rely on the file/filesystem
list it uses. Command such as "help" and "print" are such
candidates.

The attached patch addresses this issue, and also allows
"-c help [xxx]" in xfs_io without a file. xfs_quota will
not print help once for each XFS filesystem either.

fix_c_option.patch
Description: Binary data