S3 storage bucket not being automatically created

Hi,

Duplicity version: 0.6.26 (and seemingly trunk)
Python version: 2.7.9
OS: Debian Jessie
Target storage: S3

Duplicity is not automatically creating S3 buckets, whereas I think it should be (from the documentation and the code).

Buckets are created automatically from put() in _boto_single.py. However, the first time an attempt is made to access a bucket is in resetConnection(), which does not have the exception handling (and bucket creation) that put() does.

Fix: I think the bucket creation exception handling should be in resetConnection() instead of put(). If for some reason put() can be called without resetConnection(), then it should be in both.

Thanks,

Andy