call-forwarding: Return specific errors for SS
call-settings: Return specific errors for SS
udev: add Wavecom support

This adds OFONO_WAVECOM_MODEL that can set in the udev rules file
to indicate the modem model, eg.

ENV{OFONO_WAVECOM_MODEL}="Q2XXX"
wavecom: add support for Wavecom Q2403/Q2686 modems
sim: Quirk Wavecom Q2XXX CPIN behavior
Release 1.7
sim: Use ofono_bool_t instead of gboolean
sim: Add special callback for reading ICCID value
sim: Add special callback for reading MSISDN value
sim: Add special callback for reading MCC and MNC value
modem: Add function for setting new driver type
sms: Make PDU data arrays const
gprs: Use ofono_bool_t instead of gboolean
audio-settings: Conform to coding style item M4
call-barring: Conform to coding style item M4
call-forwarding: Conform to coding style item M4
call-meter: Conform to coding style item M4
call-settings: Conform to coding style item M4
call-volume: Conform to coding style item M4
cdma-sms: Make const correct