Fix Felix-2487 If @Component is missing, the annotation processing is aborted. This case is detected by the MetadataCollector, but the warning message is handled by Pojoization Add tests.
felix/trunk/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/annotations/MetadataCollector.java
felix/trunk/ipojo/tests/core/annotations/src/main/java/foo/