New version of copyItemsValuesByFieldIndexes()
Big refactor of CobolDumpParser

Move utility methods to base abstract class BaseCobolDumpParser.
Leave methods to parse the lines and get Strings in CobolDumpParser
Move method for use in Hadoop to CobolDumpParserForHadoop
Remove deprecated methods and add method to access one field
Fix test to use new methods from last commit
Add test for all CobolDumpParserForHadoop's methods
Made 'format' required
Add fields classes to encapsulate Format
Make Field abstract
Move Field to field package