#334 Please document the purpose of arrDelimiters parameter in _sqlFormat

[Jira Trac]

It's related to issue http://jira.cubrid.org/browse/APIS-376.

Please document the purpose of *arrDelimiters* parameter in *_sqlFormat()* function.

I guess that this is done for future use when on the server user can turn on/off *ansi_quotes* parameter in _cubrid.conf_.

Also in *queryWithParams()* this parameter should be optional, since *_sqlFormat()* already has a fallback value (single quotes).