Adding category sci-apps
sci-apps/z3: Initial exheres (-scm, tracking branch ml-ng)
app-misc/nyancat: Export phases
dev-scm/hub: Export phases in exlib
dev-scm/hub: Version bump to 1.12.0
x11-utils/xcalib: Export phases
net-dns/dnssec-trigger: Fix LICENCES (BSD-4 instead of BSD)