Delete all of the vim/emacs modelines.
Add copyright information for a few files.

Signed-off-by: Liang Zhen <liang@whamcloud.com>
Change-Id: Ic22ce8d8cc7786ffdb19937eb9f93a2d49aa2581
Reviewed-on: http://review.whamcloud.com/2658


Tested-by: Hudson
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>