# Rev. : 0.2 - bug fixes
# Rev. : 0.3 - added thread signaling
# Rev. : 0.4 - minor bug fixes and better code usability
# Rev. : 0.5 - added the ability to have multiple pools within the same scope, each identified by its own CODE block
# Rev. : 0.6 - code cleanup and improved capability to cleanly exit when called with older versions of perl. Avoided the need to have the arg of the CODEREF ( passed viai ->addToTheQueue ) being previously shared.
# Rev. : 1.0 - now accepts an hash of options as argument to the constructor. Changed the interface options' order, if using positional args.
# Rev. : 1.1 - checks for threads::shared version in use, so that we might shared_clone() ( possibly more accurate ) the args to the CODEREF
# - checks for threads version in use, so that we might correctly sig-kill the threads or change the sempahore value
# Rev. : 1.1.1 - maintainance release ( no code modifications )