Instead of the `_in_port()' variants, we'll provide more generic
`_full()' methods. These should be used either if we want to send commands
to a specific port, or if we want to use a specific user-provided GCancellable.
In addition to this user-provided GCancellable, we keep the internal modem-wide
one.
Renamed `MMCommonBearerProperties' to `MMBearerProperties', and removed the
`MMBearerProperties' provided in libmm-glib. We'll just use the original one
from libmm-common always.
Renamed `MMCommonBearerIpConfig' to `MMBearerIpConfig', and removed the
`MMBearerIpConfig' provided in libmm-glib. We'll just use the original one
from libmm-common always.
