I had to remove the keyword as I added a use flag with the dep on net-dns/libidn, which doesn't have a sparc keyword. Simply adding ~sparc to net-dns/libidn, then readding it to the kdenetwork/pim-3.2.3 ebuilds should be sufficient. (it was also removed from the kde.ebuild meta build). Hopefully this doesn't cause too many problems.
Keywords have been added. In the future, anything that can humanly be done to prevent situations like this would be grately appreciated. Having to remove keywords from ebuilds that already have them is bad. Having us test the bad deps before the change is committed is preferable if you aren't going to rev-bump the given package. Thanks.