CloverOptimizerMojo does not support full include/exclude syntax

Problem:

CloverOptimizerMojo does not support full include/exclude syntax, which can be handled by maven-surefire-plugin. Two cases are not handled right now:

(1) multiple paths separated by comma

<include>**/Test1.java, **/Test2.java</include>

(2) regular expression instead of Ant-style pattern

<include>%regex[.*Test.class]</include>

See: http://maven.apache.org/plugins/maven-surefire-plugin/examples/inclusion-exclusion.html

Workaround:

(1) use separate entries, like:

<include>**/Test1.java</include>
<include>**/Test2.java</include>

(2) not available; user can try to replace regexp by set of Ant-style patterns

Implementation:

CloverOptimizerMojo relies an Ant-style patterns underneath. The CloverOptimizerMojo.createFileSet() method has

private FileSet createFileSet(Project antProject, final File directory, List includes, List excludes) {
  FileSet testFileSet = new FileSet();
  ...
  testFileSet.appendIncludes((String[]) includes.toArray(new String[includes.size()]));
}

fix for (1) - split every element in includes/excludes arrays using the comma delimiter and pass expanded arrays to appendIncludes()

fix for (2) - find all elements from includes/excludes arrays having %regexp keyword, run file search on directory using a filename matcher with regexp, create include/exclude for every file matched