Add multiple author support to dev, due-to, and due-to-email action attributes

>maven -i  __ __ | \/ |__ _Apache__ ___ | |\/| / _` \ V / -_) ' \ ~ intelligent projects ~ |_| |_\__,_|\_/\___|_||_| v. 1.0-rc3 #---- BEGIN: Which report Which.version=Which.java:($Revision: 1.2 $) WhichJar.java:($Revision: 1.2 $) java.version=1.4.2_04 file.encoding=Cp1252 java.ext.dirs=C:\java\sun\1.4.2_04\jre\lib\ext java.class.path=C:\Program Files\Apache Software Foundation\Maven 1.0-rc3\lib\forehead-1.0-beta-5.jar os.name=Windows XP java.vendor=Sun Microsystems Inc. sun.boot.class.path=C:\Program Files\Apache Software Foundation\Maven 1.0-rc3\lib\endorsed\xerces-2.4.0.jar;C:\Program Files\Apache Software Foundation\Maven 1. 0-rc3\lib\endorsed\xml-apis-1.0.b2.jar;C:\java\sun\1.4.2_04\jre\lib\rt.jar;C:\java\sun\1.4.2_04\jre\lib\i18n.jar;C:\java\sun\1.4.2_04\jre\lib\sunrsasign.jar;C:\ java\sun\1.4.2_04\jre\lib\jsse.jar;C:\java\sun\1.4.2_04\jre\lib\jce.jar;C:\java\sun\1.4.2_04\jre\lib\charsets.jar;C:\java\sun\1.4.2_04\jre\classes java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition #---- END: Which report Installed plugins:   maven-castor-plugin-1.2   maven-site-plugin-1.5   maven-multiproject-plugin-1.3   maven-jdepend-plugin-1.5   maven-clover-plugin-1.5   maven-genapp-plugin-2.2   maven-jbuilder-plugin-1.5   maven-jboss-plugin-1.5   maven-dashboard-plugin-1.3   maven-artifact-plugin-1.2   maven-developer-activity-plugin-1.5   maven-war-plugin-1.6   maven-native-plugin-1.1   maven-cruisecontrol-plugin-1.2   maven-webserver-plugin-2.0   maven-docbook-plugin-1.2   maven-deploy-plugin-1.3   maven-ear-plugin-1.5   maven-repository-plugin-1.2   maven-j2ee-plugin-1.5   maven-jnlp-plugin-1.3   maven-linkcheck-plugin-1.2   maven-javadoc-plugin-1.5   maven-vdoclet-plugin-1.2   maven-hibernate-plugin-1.1   maven-appserver-plugin-2.0   maven-antlr-plugin-1.2   maven-jira-plugin-1.1   maven-ant-plugin-1.7   maven-gump-plugin-1.3   maven-tasklist-plugin-2.3   maven-xdoc-plugin-1.7.1   maven-ashkelon-plugin-1.2   maven-tjdo-plugin-1.0.0   maven-html2xdoc-plugin-1.3   maven-announcement-plugin-1.1   maven-pmd-plugin-1.4   maven-jxr-plugin-1.4   maven-struts-plugin-1.3   maven-latka-plugin-1.4   maven-junit-doclet-plugin-1.2   maven-pom-plugin-1.4   maven-changelog-plugin-1.5   maven-clean-plugin-1.2   maven-license-plugin-1.2   maven-jetty-plugin-1.1   maven-jdee-plugin-1.1   maven-file-activity-plugin-1.5   maven-jcoverage-plugin-1.0.4   maven-jdiff-plugin-1.4   maven-jar-plugin-1.5   maven-scm-plugin-1.3   maven-aspectwerkz-plugin-1.2   maven-faq-plugin-1.3   maven-plugin-plugin-1.3   maven-dist-plugin-1.5   maven-jellydoc-plugin-1.3   maven-javacc-plugin-1.1   maven-shell-plugin-1.1   maven-simian-plugin-1.4   maven-ejb-plugin-1.4   maven-java-plugin-1.4   maven-console-plugin-1.1   maven-pdf-plugin-2.1   maven-release-plugin-1.3   maven-changes-plugin-1.4   maven-nsis-plugin-1.0   maven-checkstyle-plugin-2.4.1   maven-wizard-plugin-1.1   maven-uberjar-plugin-1.2   maven-caller-plugin-1.1   maven-junit-report-plugin-1.5   maven-eclipse-plugin-1.7   maven-latex-plugin-1.2   maven-jdeveloper-plugin-1.4   maven-aspectj-plugin-3.0   maven-idea-plugin-1.4   maven-jalopy-plugin-1.2   maven-test-plugin-1.6.1   maven-multichanges-plugin-1.1 Home Build properties: {jaxp.xslt.jar=C:/java/apache/xalan-2_5_D1//bin/xalan.jar, servlet.jar=C:/java/sun/jwsdp-1.1/common/lib/servlet.jar, jaxp.jaxp.jar=C:/jav a/apache/xalan-2_5_D1//bin/xml-apis.jar, junit.jar=C:/java/junit3.8.1/junit.jar}