parser_csv 6.x-1.0-alpha2

Changes:

• Use jpetso's CSV parser (parser_csv_parser.inc).
• Don't read entire file into memory: Download CSV file with curl to tmp directory and use a file iterator to read csv file.
• Remove field mapper, rely on feed element mapper instead.
• #355129: require_once to be on the safe side. Thanks alan for reporting.
• #363247, #365562 gionnibgud, KarenS - respect delimiter settings.
• #408668 Aron Novak: Process CSV files with one row.

WARNING: Alpha releases mean that compatibility between releases is not guaranteed. This release is not compatible with the 6.x 1.0 alpha 1.