Initial MonitoringSupport implementation.
Fixed mis-matched service action in CloudWatch.
Changed cloudwatch service prefix.
Moved common XML/Node code to AWSCloud.java. Corresponding Alarm and Metric property changes from core.
Added update/remove alarms, enable/disable alarm actions. Added javadoc.
Fixed misspelling.
Implemented pagination in for listMetrics() in CloudWatch. Followed pattern from Route53.
Merge branch 'monitoring-support' of https://github.com/clstokes/dasein-cloud-aws into develop

Conflicts:
	src/main/java/org/dasein/cloud/aws/compute/EC2Method.java
	src/test/java/org/dasein/cloud/aws/AWSTestSuite.java