i=grev
speedups fo SLOW=no and fixes for remote client

i=grev
i=adilger
branch=b1_6

change rundbench script to use contents of DBENCH_LIB variable to
find the location of the dbench executable (like acceptance-small.sh does)
so that we use the same environment variables to specify the location
of the dbench executable in both acceptance-small.sh and rundbench
instead of using different environment variables to configure the
same thing in the two different scripts.

Allow dbench to find client.txt in /usr/share/dbench.
b=12467
i=nathan
i=adilger (original patch)

 - dozens and dozens of fixes for working with 2.6 kernels
 - new 2.4 kernel APIs
 - uncountable bug fixes

- fixes of many metadata bugs:
  - multiple client file opens
  - missing/extra intent releases
  - symlink fixes
- OST/MDS server threads clobbering each other
  - dbench 2 works mostly
- many others too numerous to mention here (ChangeLog is a good record)

                "/mnt/obd" --> "/mnt/lustre"
- small changes to RPC code to handle request packet freeing later,
  separate connection initialization and connect.
- rename event handlers and queues, add separate request_out and
  reply_out queue