retry on ratelimit

Added a retry_on_ratelimit parameter to the Connection
class so that ratelimited requests can be retried.

DocImpact

Change-Id: I2817a7ea0ed2d69a7659e80111fbd2c91a75d530
Replace xrange in for loop with range

xrange is not supported in python 3, so replace it with range since no
large size lists involved.

Closes-Bug: #1237717

Change-Id: I4e5e0782153d32c8beee03f7d871722ed4352859
Install swiftclient manpage

Currently the existing manpage isn't copied to /usr/local/man/man1
when installing swiftclient from source. This patch fixes this.

Change-Id: Ib2ee091d5e1d4c37a4e5a00f50fa19df44bd3c41
Partial-Bug: 1269715
Merge "Replace xrange in for loop with range"
Merge "retry on ratelimit"