Update disk size information for some i2. instance types in the EC2 driver.
Make the following changes to the S3 driver:
 - Add ACL support for uploads
 - Add support for AWS tokens
 - Modify get_container to use a more efficient HEAD approach

Closes #223.

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
Update CHANGES.
docs: Update upgrade notes, add a note about get_container change.
docs: Add an example of how to specify canned ACL when uploading an object in
the S3 driver.
Update Documentation for Google Compute Engine
Also, some fixes to docstrings to play nicely with sphinx.
Lint fixes
Change conflicting name (and update website)
Add support for creating GCE nodes with Static or No external IPs.

Closes #225.

Signed-off-by: Tomaz Muraus <tomaz@apache.org>
docs: Add an example of how to use Amazon temporary security credentials.
Merge branch 'trunk' of https://git-wip-us.apache.org/repos/asf/libcloud into GCE_Docs_Update
Re-generate documentation fixtures.
docs: Add index page to load balancers drivers chapter.
Bump version.
Add SPF to supported record types of the Rackspace DNS driver.
Modify Rackspace DNS driver to set record name to None for the records
which correspond to the root domain.

This is done for consistency with other drivers.
Update Zerigo DNS driver to set Record.name attribute for records for bare
domains to None instead of an empty string.
Update .gitignore.
Update CHANGES.
Update upgrade notes.