This patch makes it possible to use MM to set up PDP contexts with
PDP types other than 'IP', which is particularly useful when trying
to use the 'IPV6' or 'IPV4V6' PDP types defined in recent 3GPP specs.
If ip-type isn't specified, 'IP' will be used by default, due to the
fact that modem support for the 'IPV4V6' type is still rather scarce.
The patch applies to Aleksander's 'bearer-properties' branch. It has
been tested using mmcli in this fashion:
mmcli -m 0 --simple-connect=apn=internet # default to 'IP'
mmcli -m 0 --simple-connect=apn=internet,ip-type=IP
mmcli -m 0 --simple-connect=apn=internet,ip-type=IPV6
mmcli -m 0 --simple-connect=apn=internet,ip-type=IPV4V6
The base MMBearer object will receive the MMBearerProperties configuration,
which contains every generic and plugin-specific set up. Not every configuration
parameter will be used by every implementation (e.g. not every bearer needs
user/password).
The Bearer object will expose every configuration parameter received in its
`Properties' property in the interface, even if it's not really used.
Renamed `MMCommonBearerProperties' to `MMBearerProperties', and removed the
`MMBearerProperties' provided in libmm-glib. We'll just use the original one
from libmm-common always.
