Fix resize2fs error msgs if the fs or kernel doesn't support on-line resize

Check to make sure the filesystem has a resize inode if it is needed to
grow the filesystem.  Print the correct error message if the kernel
returns an ENOTTY error to the group extend ioctl

Addresses Debian Bug: #380548

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2 files changed