Added support for exclusions to AbstractTypeAwareSupport.

AbstractTypeAwareSupport now takes an array of type to be excluded from the bean lookup. The BeansOfTypeTaregtSource's actual bean lookup was changed to not trigger bean creation of types to be excluded.

core/src/test/java/org/springframework/plugin/core/config/EnablePluginRegistriesIntegrationTest.java

@@ -59,6 +59,7 @@ public class EnablePluginRegistriesIntegrationTest {
 		assertThat(registry, is(notNullValue()));
 	}
 
+	@Qualifier("myQualifier")
 	interface AnotherPlugin extends Plugin<String> {
 
 	}