Renamed `MMCommonSimpleProperties' to `MMSimpleStatus', and removed the
`MMSimpleStatusProperties' provided in libmm-glib. We'll just use the original
one from libmm-common always.
Renamed `MMCommonConnectProperties' to `MMSimpleConnectProperties', and removed
the `MMModemSimpleConnectProperties' provided in libmm-glib. We'll just use the
original one from libmm-common always.