snap/snap.c: snap_do_cow() fixed case with existing indirect object

snap/snap.c: snap_do_cow() fixed case with existing indirect object
snap/snap.c: snap_delsnap() removes (partly) a snapshot
ext2obd/ext2_obd.c: fixed ext2obd_iterate() to handle reserved inodes
ext2obd/ext2_obd.c: fixed direct_brw() to handle > 0 block offset
class/obdcontrol: added testsnapiterator command/ioctl
class/setup.sh: added creation of /tmp/fs, 4k block size
obdfs/namei.c: fixed new directory size after write