MAVEN-53 Log classpath info in case of exception
MAVEN-53 Indicate clearly when a Liferay version is not supported by this plugin version

Liferay Portal versions below 6.1.0 don't include any of the jar in portal-web.war WEB-INF/lib which are required for this plugin to execute Liferay tools correctly
MAVEN-53 Source format
MAVEN-53 Make sure jars are loaded in correct order