FilterActionJob -- a job that takes a bunch of items, filters them according to some rules, and then applies an action to the items accepted by the filter. The filter rules and action to perform are provided by a class derived from FilterAction, and can be almost anything.

This is used in OutboxInterface to mass-modify items in the outbox.

svn path=/branches/kdepim/soc/kdepimlibs/; revision=982558