When a recipe is tainted (as a result of -C or -f, or for some recipes when -c menuconfig is used) it would be nice if the taint could be cleared if the reason for the tainting were invalidated - e.g. the source is unpacked again. This likely can't be done at the time that task executes though because the taint warning occurs just before all of the tasks are run.
Clarification - it's a *task* that gets tainted, not the entire recipe.
Bulk move from 4.99 or 0.00 to 5.99