JCLOUDS-330/JCLOUDS-416: Use network options in Abiquo
Add CloudSigma v2 Washington DC provider
Fixed minor style things
Typo in CloudApi method annotation
[JCLOUDS-415] Upgrade to guava 16.0
Added the DigitalOcean provider
Align management and representations with the upstream Guava version
Fixing CloudSigma tests failing on Java 8

Using a map type in the test setup that has a deterministic iteration order
JCLOUDS-534: Address Guava 17 compatibility issues

Corrected with:

find -name \*.java | xargs sed -i 's/new Stopwatch();/Stopwatch.createUnstarted();/'
find -name \*.java | xargs sed -i 's/new Stopwatch().start();/Stopwatch.createStarted();/'
JCLOUDS-534: Upgrade to Guava 17.0-rc2

Release notes:

https://code.google.com/p/guava-libraries/wiki/Release17
JCLOUDS-534: Upgrade to Guava 17.0

Release notes:

https://code.google.com/p/guava-libraries/wiki/Release17
Update pre-ASF copyright notices
Address Checkstyle violations
JCLOUDS-544: Add missing ERROR value to the Event.Status enum
Address checkstyle violations
Prefer Guava HttpHeaders over JAX-RS

jclouds code contains more instances of the former and Guava has
additional constants like CONTENT_MD5.
Make constants final classes instead of interfaces

This commit prohibits implementation of the empty interface and
instantiation of the class.  Refer to _Effective Java_ item 19 for
more background.
Incorrect constructor name
Migrate InputSupplier callers to ByteSource

A future version of Guava will remove InputSupplier.
Added unit tests for compute functions