Tagging second candidate for release 2.1 of boto.

First candidate for 2.1 release.

Tagging Version 2.0

2.0 Release Candidate 1 tag

Version 2.0 beta 4

Tagging 2.0b3 release.

making 1.9b compatible with Python 2.7

tagged 1.9b

Tagging 2.0b2 release

Tagging for 2.0b1 release.