Land b1_4_smallfix onto b1_4 (20040720_0138)

Land b1_4_smallfix onto b1_4 (20040720_0138)
- don't hold llog sem during network request (3652)
- update server last transno after client disconnects (2525)
- replace config semaphore with spinlock (3306)
- don't allow multiple threads in OSC recovery(3812)
- don't close LustreDB during write_conf until it is done (3860)
- fix typo in lconf for_each_profile (3821)
- allow dumping logs from multiple threads at one time (3820)
- drop dentry ref in ext3_add_link from open_connect_dentry (3266)
- free recovery state on server during a forced cleanup (3571)
- unregister_reply for resent reqs (3063)
- loop back devices mounting and status check on 2.6 (3563)
- fix resource-creation race that can provoke i_size == 0 (3513)
- don't try to use bad inodes returned from MDS/OST fs lookup (3688)
- more debugging for page-accounting assertion (3746)
- return -ENOENT instead of asserting if ost getattr+unlink race (3558)
- avoid deadlock after precreation failure (3758)
- fix race and lock order deadlock in orphan handling (3450, 3750)
- add /proc/.../recovery_status to obdfilter (3428)
- lightweight CDEBUG infrastructure, debug daemon (3668)
- change default OSC RPC parameters to be better on small clusters
- turn off OST read cache for files smaller than 32MB