Quiet a few printk's and turn them into CDEBUGs so they don't go to console.

Quiet a few printk's and turn them into CDEBUGs so they don't go to console.
Remove check for kernel code older than 2.3 - lustre will never go there.

* Add warning for lprocfs_bfs_srch(): having recursive code in the kernel is
* extremely frowned upon, because there is a very limited kernel stack size
* (only 8kB).  That has to be enough, not only for your functions, but all
* other functions in that call trace, as well as interrupt handlers and such.

Remove extraneous line continuation characters.
Whitespace reformatting to match the rest of the lustre code.