JCLOUDS-545: Use established conventions for OpenStack APIs, updates JavaDocs and tests

Conflicts:
	rackspace-cloudfiles/src/test/java/org/jclouds/rackspace/cloudfiles/v1/features/CloudFilesCDNApiLiveTest.java
JCLOUDS-562: Decode object names with spaces, added test cases and updated test names.
JCLOUDS-547: Improved header and option support for Swift/Cloud Files
Moving dependencies to 1.7.3
[maven-release-plugin] prepare release jclouds-labs-openstack-1.7.3-rc1
[maven-release-plugin] prepare for next development iteration
Adds paging fail tests for Queues. Implements Queues-specific fallback.