Evolve Sonar plugins in order to handle an optional list of files to process

It would be nice if during a CI build, let's say in Hudson or another CI tool, we could run Sonar on the changed files since the latest build. For this, we should be able to send a list of source code files from such a CI tool to Sonar, run the quality checks on the given files and return the results of what files had what problems back to the CI tool, so that after the build is done a mail similar to "you broke the build" could be sent to the committers that had quality issues in the code.
As I understood from Freddy, in order to be able to do this, first Sonar plugins must be evolved to be able to process an optional list of files. I have created this JIRA issue at his advise.