ext4: clarify error count warning messages
ext4: clarify error count warning messages

Make it clear that values printed are times, and that it is error
since last fsck. Also add note about fsck version required.

Signed-off-by: Pavel Machek <2375fa63e2908bb2df59f606483a3aa92321db7a@ucw.cz>
Signed-off-by: Theodore Ts'o <4ed386e0495d3e109932df055831d9ec2f824927@mit.edu>
Reviewed-by: Andreas Dilger <fd4823dd86d134508df78a168e24c446ce7699f3@dilger.ca>
Cc: 4fbacc2fa0ffdbb11bf1ad6925b886ebd08dd15f@vger.kernel.org


KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs