config.cache: globally disable the broken gnulib mktime configure check
gobject-introspection: bump to 1.38 (fixes build error)
add python-py2cairo
add python-urlgrabber
add python-pygobject
add python-pygtk
add python-dbus

dbus is not used anywhere in sabotage, except in the E17 packages
contributed by @staalmannen.
add libyajl
add portablexdr (features some rpc stuff usually in glibc)
add libvirt
add python-virtinst
add unfinished virt-manager