Rename libnm's NMVpnPlugin to NMVpnPluginOld, in preparation for
having a new-and-improved NMVpnPlugin in NM 1.2. Also remove it from
NM-1.0.gir.
Make nm-vpn-plugin-old.h be separately includable, since it's not
included from NetworkManager.h, and we probably don't want it to be.
Remove NMVpnPlugin, NMVpnPluginUiInterface, and nm-vpn-plugin-utils
from the docs, since they're basically undocumented anyway.
The docs for NMIP4Config:addresses and NMIP4Config:routes claimed that
they were GPtrArrays of NMIP4Address/NMIP4Route, but get_property()
was actually trying to set them the D-Bus representation type, and it
was failing anyway because it used g_value_set_boxed() on a parameter
that was declared GParamSpecPointer. Fix it to use a GPtrArray-valued
property, and set it to the right thing.
NMIP6Config did the right thing with its :addresses and :routes
properties, but was using custom types (NM_TYPE_IP6_ADDRESS_OBJECT_ARRAY and
NM_TYPE_IP6_ROUTE_OBJECT_ARRAY). Make it use G_TYPE_PTR_ARRAY instead.
nm-types.c, nm-types.h, and nm-types-private.h are now empty, and so
can be dropped.
