parses a query string suitable for external search engines
This module parses a query string into a data structure to be handled 
by external search engines. For examples of such engines, see 
File::Tabular and Search::Indexer.

The query string can contain simple terms, "exact phrases", field 
names and comparison operators, '+/-' prefixes, parentheses, 
and boolean connectors.

Maintainer: Ian Mcwilliam <kaosagnt@tpg.com.au>
