xib-bot: Update ebuild to git-2 and python-single-r1 eclass (Portage version: 2.2.7/hg/Linux x86_64, unsigned Manifest commit)

app-portage/eix
app-portage/gentoolkit
app-portage/layman
sys-apps/iproute2
sys-apps/mlocate
sys-power/acpi
sys-power/acpid