Fixed: when saxparsing, resultset will politely return [] when asked for non-existent portal_names.
Converting Rfm classes to use sax-parser.
Slight optimization for sax parser attributes. 'rake benchmark_sax' now loads data into var before running benchmark, just like old XmlParser does.
Continued conversion to sax-parser. Consolidated Base.new, Base#inititalize into Rfm::Record. Fixed validation callbacks issue.