#9 processing quoted CSV files

[Gábor Lipták]

This attached patch prepares the groundwork for
processing quoted CSV files with
FileResultSetFactory. It does keep compatiblity with
inserting NULLs when encountering empty delimiters
(although inserts empty string when ,"", is parsed).
Because of the parsing done char-by-char, both
delimiter and quote need to be chars (as contrasted
to String).

Please let me know if FileResultSetFactory should be
modified with this new processing, and I would like
to proceed.

Thanks

[Gábor Lipták]

processing quoted CSV files