update the manual for lmc, lconf and lctl

r=braam
update lctl.lyx

r=braam
update lmc.lyx and lconf.lyx

b_cmobd_merge should not be used for any further development or testing!

cMD_PRE_CMD_SMASH are the relevant tags.

The pre-smashing contents of HEAD will be committed by yury into b_cmd as a
merge of the two branches.  These will be stabilized on b_cmd and eventually
landed onto HEAD.

b=3057, 2947, 2925, 3050, 3041, 2849, 1662

 * remove lustre-HOWTO from cvs/build, as it's now on a wiki page.

 * disable lustre.pdf building by default.

r=phil

(i'm just committing jerrifer's work + a couple of typo fixes)

add a --disable-doc option to lustre's configure which skips .pdf doc
building (to ease rpm creation).

- remove extN/ files

  than code)

- 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)

'make docs' will build the lustre.pdf document.

Replace the man page for lmc to describe the current options for lmc. Added a new file which describes the proposed new implementation for lmc.

  pictures before we distribute.

- of particular importance is lustre-conf.
- this is included as a new chapter in the book.