Merge pull request #10 from martinjones/master

[libqofono] Add asynchronous API for phonebook.
[libqofono] bump version to 0.23
[libqofono] sort the modems list so internal modems are listed first.

This fixes problems when a phone is paired and has hfp. Since ofono
sorts them into alphabetical order, we need to re-sort it.
[libqofono] bump version to 0.24
[libqofono] make simmanager easier to deal with, fully qualify signal
enums.
[libqofono] bump version to 0.25
add tests
[libqofono] make callmeter, handsfree,networkoperator and voiceCall more
async.
[libqofono] connect the correct slot
[libqofono] its a slot not a signal
[libqofono] bump version to 0.27
Merge branch 'master' into tests
[libqofono] add auto tests.

ported from libofono-qt.
[libqofono] make new tests find the library
Merge pull request #11 from martinjones/master

[libqofono] Add missing functionality. Make async. Report errors.
Merge pull request #12 from martinjones/master

[libqofono] More barring, fowarding, settings API changes.
[libqofono] [packaging] fix packing of new auto tests
[libqofono] enable simmanager test
[libqofono] bump version to 0.29
Merge pull request #13 from martinjones/master

[libqofono] Fix some bugs in supplementary services.