Merge branch 'submodule' into factory
some bug fixes
Added classes destroyer and singleton, and the suite of factory/registrar classes
Added a registrar for digitizer_px1500
Fixes in adapting the factory class
Added digitizer::allocate to take care of what was previously done in the constructor.
Adapted the mantis server to use a factory to select the digitizer.
Removing unused map iterator access from factory.
Merge branch 'factory' of git://github.com/project8/mantis into factory
Merge branch 'submodule' into factory
Changed wait timing in client
Merge branch 'factory' into submodule
Improved documentation