Logging configuration

Add some documentation on logging configuration.

This content is based on a blog entry by Sébastien Han:
http://www.sebastien-han.fr/blog/2012/12/05/openstack-and-rsyslog/

Change-Id: Ic8f2007699681a0c17184fa538e3133dec4edf86
How swift objects are layed out on filesystem

Implementation details on how Swift puts files on the filesystem.

Based on an email from John Dickisnon on the openstack mailing list.

(Also trims a lot of trailing whitespace from several lines in
this file).

Change-Id: I5665ec031b070856352051417d507b55735cc4d3
Merge "Logging configuration"