Initial implementatoin of mass workflow state change was playing arround the API of SelectionTool and Selection, getting parameters and reimplementing part of Selection.__call__ API in order to be able to override certain parameters. As a result, some parameters were not taken into account in some cases and the result was not the same as the one from the selection. In this change, we extend the API of Selection so that, just like for methods, it is possible to override in a non persistent way the parameters which are passed to the selection method. This is similar to the existing possibility of overriding the calling context or the selection method.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@31466 20353a03-c40f-0410-a6d1-a30d3c3de9de