[Enh] MACustomDescriptionBuilder

I wrote this because I want my data model classes to have one set of #description's to model their data structure and another set of #settings to model the view/filter settings that are available for each class. I dont know what the best way to achieve this with magritte would be, but I figured being able to have multiple sets of descriptions for different unrelated purposes could be very useful. As an implementation detail, it might be useful if the MADescriptionBuilder 'Cache' was a class instance var rather than a classVar. best regards Keith p.s. Lukas, I want to thank you for all of the great help you have provided, especially in the past few days. In http://mc.lukas-renggli.ch/pieraddons Name: Magritte-CustomBuilder-kph.1 Author: kph Time: 18 August 2007, 2:53:47 am UUID: dc2d465c-4d2d-11dc-b626-000a95edb42a Ancestors: - Variant of MADescriptionBuilder that is not tied to #description as a prefix. usage: (MCCustomDescriptionBuilder prefix: #settings) for: anObject Notes: Includes a performance enhancement to double speed of description building. (selectors of Object are ignored) before: [ 1000 timesRepeat: [MADescriptionBuilder default build: (ProductData) ] ] timeToRun. 21622 after: [ 1000 timesRepeat: [(MACustomDescriptionBuilder prefix: #description) build: (ProductData) ] ] timeToRun. 11075