Ignore generated files.

r=adilger

First stab at improving some user visible error messages.

     lctl --net ??? loopback             # show current state
     lctl --net ??? loopback on          # enable loopback optimisation
     lctl --net ??? loopback off         # disable loopback optimisation
     By default loopback optimisation is turned OFF

changes, and wondering how that happened.

*   Ranal "working" @ 1.2GBytes/sec single channel, 2.4GBytes/sec double

do not dist non-linux (darwin) files by default.

added a license file
fixed up some stray copyright notices

    ksocknal_del_peer_locked CVS:

	  - removed CFS_DECL_SPIN*
	    just use 'spinlock_t' and initialise with spin_lock_init()

	  - removed CFS_DECL_MUTEX*
	    just use 'struct semaphore' and initialise with init_mutex()

	  - removed CFS_DECL_RWSEM*
	    just use 'struct rw_semaphore' and initialise with init_rwsem()

	  - renamed cfs_sleep_chan -> cfs_waitq
	            cfs_sleep_link -> cfs_waitlink

          - fixed race in linux version of arch-independent socknal
  	    (the ENOMEM/EAGAIN decision).

	  - Didn't fix problems in Darwin version of arch-independent socknal
 	    (resetting socket callbacks, eager ack hack, ENOMEM/EAGAIN decision)

	  - removed libcfs types from non-socknal header files (only some types
	    in the header files had been changed; the .c files hadn't been
	    updated at all).

	  - Updated lustre b1_4 to match

add LB_CHECK_FILE(S), which work while cross-compiling.

CVS/Repository, but we only want the basename.

complain if more than one argument was passed, so that people who do ./lustrecvs co -r foo get an error as soon as practical

   configurations to fail rather than trip a server assertion.

*  5606 fix ensures both peers agree on maximum "immediate" get.

*  ranal updates

- fixed problem with sid of virtual directory "FIDS". By now it is saved to store just like last_rcvd and last_fid and read from there on startup.

- a lot of changes about last_fid management. last_fid_changed flag is removed and last_fid_sem is
replaced by spin lock.

so there is no need to accomodate for 2.4 kernel config differences.

So it must only warn, not abort.

remove unnecessary error msg, cleanup