Fixed Glacier response timestamp parsing

Some responses have a millisecond component and some do not.
Also do not attempt to parse null timestamps, duh.
Fixed Glacier archive deletion call
Added pagination support to Glacier list requests

Fixes bug where only the first 10 vaults would be returned
in a list request.
Merge pull request #56 from labisso/glacierfixes_develop

Fixes for AWS Glacier support (develop)
Include size in Glacier vault descriptions
Improved error handling in Glacier.isSubscribed()

Glacier is not present in all regions and the unknown host
errors were bubbling up, and logging noisily.
Merge pull request #58 from labisso/glacier_dirsize_develop

Include size in Glacier vault descriptions (develop)
Merge pull request #59 from labisso/glacier_subscription_develop

Improved error handling in Glacier subscription check (develop)
Added support for m1.small "I64" vm product.
Merge pull request #61 from binod33/develop

Added support for m1.small "I64" vm product.
Migrating vm products from 2013.02 to develop
Merge pull request #64 from binod33/develop

Migrating vm products from 2013.02 to develop
Merge pull request #34 from greese/develop

Develop