+ scanning by CQL query. To support these tests, a new files
+ is added to the distribution, "samples/cql/pqf.properties"
+ - Remove nonsensical clause about CQL sort-specifications from
+ the documentation.
+ - Add new function Net::Z3950::ZOOM::query_cql2rpn(), for
+ client-side CQL compilation.
+ - Add new ZOOM::Query::CQL2RPN class, encapsulating CQL
+ compiler functionality as a Query subclass.
+ - Add two new error-codes, CQL_PARSE and CQL_TRANSFORM,
+ returned by the client-side CQL facilities.
+ - The test t/22-query.t is extended to also test client-side
+ CQL compilation. ### t/12-query.t needs to be similarly
+ modified.
+ - Add all the yaz_log*() functions within the Net::Z3950::ZOOM
+ namespace.
+ - Add new ZOOM::Log class for logging, providing aliases for
+ the functions in the Net::Z3950::ZOOM layer.
+ - Add diagnostic set to rendering of Exception objects.
+ - ### Documentation updates required for CQL compilation,
+ logging and exception rendering.