Refactor DiskFile instantiation in object server.

DiskFile() takes a lot of arguments whose value is the same on every
instantiation, so I pulled that stuff out into a utility method. No
functionality change is intended.

Change-Id: I259df5602bed60d6cb48e07d6d9e58e8320ee12a
Fix swift-dispersion-report.

Fixes bug 1180680.

Change-Id: I1c0eaa6f934f73853e832a8e468e1b8369a21117
Use object name from request in bulk Errors

This will allow users to more easily match the failed objects in Errors
for bulk delete requests to the object names they provided in the request.
For extract Errors, it reports the failed path from the tar archive.

DocImpact

Change-Id: I084057810fc4fb7fdac05494cc6fec2cbf81bb9d
Add sample rsyslog.conf.

Give users a sample rsyslog.conf to manage their logs easily based on
LOCAL0 swift used. In this patch I offer some choices to output logs
via commnet lines or uncomment.

Change-Id: I2fe150a6e3d164a989c3520c0b7f032897a71f18
Merge "Fix swift-dispersion-report."
Merge "Add sample rsyslog.conf."
Merge "Refactor DiskFile instantiation in object server."
updated changelog and initial authors update for 1.9

Change-Id: I61ffbaba01aba86d61e4f3d988b5abeee8f07813