Upgrade to Guava 14.0.1

Release notes:
https://code.google.com/p/guava-libraries/wiki/Release14
Correct Keystone 1.1 authentication token timeout

We should renew after 30 minutes, not 30 hours.
Merge pull request #1429 from maginatics/keystone-1.1-correct-auth-timeout

Correct Keystone 1.1 authentication token timeout
Merge pull request #1427 from maginatics/guava-14.0.1

Upgrade to Guava 14.0.1
Update .mailmap
Merge pull request #1433 from maginatics/mailmap

Update .mailmap