Device support: Rename DeviceManager::deviceListChanged().

The name is misleading: A "change" could also mean a device was added or
removed, which is not what his signal tracks. The new name is
"deviceListReplaced", which should give a better hint.
In addition, add an explanatory comment.

Change-Id: I0a67c4caf20520df53f2d046905b7ac8da4c2972
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
VCS: Consolidate codec handling

Change-Id: I2c9a5031b63f0bc3e884739be680d051d7cf1ab4
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
VCS: Remove unused termination mode

Defaults to NoReport and nobody sets other values

Change-Id: I3def23bd350fcef45df9eb8d3a0e86baac192bd9
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>