Land b1_2_smallfix onto b1_2 (20041023_1457)

Land b1_2_smallfix onto b1_2 (20041023_1457)
- allocate qswnal tx descriptors singly to avoid fragmentation (4504)
- don't LBUG on obdo_alloc() failure, use OBD_SLAB_ALLOC() (4800)
- fix NULL dereference in /proc/sys/portals/routes (4827)
- allow failed mdc_close() operations to be interrupted (4561)
- stop precreate on OST before MDS would time out on it (4778)
- don't send partial-page writes before EOF from client (4410)
- discard client grant for sub-page writes on large-page clients (4520)
- don't free dentries not owned by NFS code, check generation (4806)
- fix lsm leak if mds_create_objects() fails (4801)
- limit debug_daemon file size, always print CERROR messages (4789)
- use transno after validating reply (3892)
- process timed out requests if import state changes (3754)
- update mtime on OST during writes, return in glimpse (4829)