ProviderService caching added, unit tests reimplemented
Merge branch 'master' of https://github.com/jbossorg/dcp-api.git

Conflicts:
	src/main/java/org/jboss/dcp/api/service/ProviderService.java
Merge branch 'master' of https://github.com/jbossorg/dcp-api.git

Conflicts:
	src/main/java/org/jboss/dcp/api/service/ProviderService.java
Merge branch 'master' of https://github.com/jbossorg/dcp-api.git
Merge branch 'master' of https://github.com/jbossorg/dcp-api.git