Xen devel - Jan 2005 - [PATCH] Add comments to libxc public header

This patch attempts to document libxc.  I used doxygen style comments
although I''ve not tried to use doxygen to generate the comments.  This
information was obtained from looking through the Xend source code and
Xfrd.  I also tried to document how the Linux control ring works.

Regards
-- 
Anthony Liguori
Linux Technology Center (LTC) - IBM Austin
E-mail: aliguori@us.ibm.com
Phone: (512) 838-1208

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>