[DOXIA-216] When an empty String was added to the excludes (possible during relative-path resolution) any link was reported valid because the pattern always matched. There is still a problem with local links that needs to be resolved, added a test case.
maven/doxia/doxia-tools/trunk/doxia-linkcheck/src/main/java/org/apache/maven/doxia/linkcheck/validation/LinkValidatorManager.java