Merge branch 'release-2.9'

Merge branch 'release-2.9'

Conflicts:
	archetypes/sonar-basic-plugin/pom.xml
	archetypes/sonar-gwt-plugin/pom.xml
	plugins/sonar-checkstyle-plugin/pom.xml
	plugins/sonar-cobertura-plugin/pom.xml
	plugins/sonar-core-gwt/pom.xml
	plugins/sonar-core-plugin/pom.xml
	plugins/sonar-cpd-plugin/pom.xml
	plugins/sonar-dbcleaner-plugin/pom.xml
	plugins/sonar-design-plugin/pom.xml
	plugins/sonar-findbugs-plugin/pom.xml
	plugins/sonar-googleanalytics-plugin/pom.xml
	plugins/sonar-pmd-plugin/pom.xml
	plugins/sonar-squid-java-plugin/pom.xml
	plugins/sonar-surefire-plugin/pom.xml
	pom.xml
	samples/pom.xml
	sonar-application/pom.xml
	sonar-batch-bootstrapper/pom.xml
	sonar-batch-maven-compat/pom.xml
	sonar-batch/pom.xml
	sonar-channel/pom.xml
	sonar-check-api/pom.xml
	sonar-colorizer/pom.xml
	sonar-core-maven-plugin/pom.xml
	sonar-core/pom.xml
	sonar-deprecated/pom.xml
	sonar-duplications/pom.xml
	sonar-graph/pom.xml
	sonar-gwt-api/pom.xml
	sonar-java-api/pom.xml
	sonar-markdown/pom.xml
	sonar-maven-plugin/pom.xml
	sonar-maven3-plugin/pom.xml
	sonar-plugin-api/pom.xml
	sonar-server/pom.xml
	sonar-squid/pom.xml
	sonar-testing-harness/pom.xml
	sonar-ws-client/pom.xml