Support multiple delimiters

[e-mhui]

New abilities

1. Supports strings as record and column delimiter.
2. Multiple row and column delimiters can be set, and the logic between multiple delimiters is or.

useage:

CsvReader reader = CsvReader.parse("1,|'\r\n,|a'\r\n2,|b\r,\n3,ac");
reader.setDelimiters(Arrays.asList(",|" ));
reader.setTextQualifier('\'');
reader.setRecordDelimiters(Arrays.asList("\r\n", "\r,\n"));

more test see AllTests.test179().