e2label.c: Fix -Wall warning by making functions static.
chattr.1.in: Document that the append-only attribute may only be set
or cleared by the superuser.
Update all manual pages to that the availability section is
up-to-date.
e2label.8.in, tune2fs.8.in: Update manual page to state that labels
must be no longer than 16 characters, or they will be truncated.
e2label.c (change_label), tune2fs.c (main): If the label is longer
than 16 characters, print a warning message stating that the label
will be truncated.
mke2fs.c (PRS): If the user specifies a filesystem size, and it's
larger than the apparent size of the device, print a warning message
and ask if the user wants to proceed.
Theodore Ts'o