ext4/010: Fixup resize2fs and dumpe2fs usage

Use $RESIZE2FS_PROG and $DUMPE2FS_PROG instead of names directly to
make progs be executed with full path. Also add proper feature test
macros.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
1 file changed