Added JarUtils extension of IOUtils for jar files
improved MetaCreator with IOUtils options
added xmlFrom jar boolean field to IOUtils (find persistence.xml in jar
file or not)
Added test unit for IOUtils.scan method
improved EarFileReaderTest and AnnotationDbTest with consideration of
xmlFromJar boolean parameter in IOUtils 
added beanName parameter for MetaCreator.configureConnection method and
improved BeanLoader class respectively also improved LibraryLoader's
getEnrichedLoader with check of URL[] on emptiness, implemented just
added IOUtils.scan method in it's DirUtils and EarUtils extensions