[nemo-qml-plugin-dbus] Add typedCallWithReturn function to DBusInterface.

Support calling DBus interface methods which return a value. The method
call is asynchronous, once the method completes the return value will
be converted into a JavaScript object and assigned to the specified
property on the specified object.
Merge pull request #4 from amccarthy/fixes

[nemo-qml-plugin-dbus] Add typedCallWithReturn function to DBusInterface
[nemo-qml-dbus-plugin] Add support for D-Bus signal handlers.

Connect D-Bus signals if the following conditions are met:

    * Introspection is supported for the set destination and
      object path.
    * The set destination, object path and interface has signals.
    * This object has a method with a matching name as the D-Bus
      signal.
    * The signalsEnabled property is true.
Merge pull request #5 from amccarthy/interface-signals

[nemo-qml-dbus-plugin] Add support for D-Bus signal handlers.
[nemo-qml-plugin-dbus] Don't add the array size to the list of dbusArguments.

QScriptValue arrays carry the size as last element, when a iterator
is used the size is reported as a value.
Merge pull request #6 from nemomobile/vdv-devel

[nemo-qml-plugin-dbus] Don't add the array size to the list of dbusArguments
[nemo-qml-plugin-dbus] Add function for getting DBus properties.
Merge pull request #7 from amccarthy/properties

[nemo-qml-plugin-dbus] Add function for getting DBus properties.
[nemo-qml-plugin-dbus] Add support for dbus signal emition.
Merge pull request #8 from nemomobile/vdv-devel

[nemo-qml-plugin-dbus] Add support for dbus signal emition.
[nemo-qml-plugin-dbus] Fix parsing of dbus introspection xml.

Incorrectly parsing the signal elements of the dbus introspection xml
prevented connecting to some signals.
Merge pull request #9 from amccarthy/fix-signal-parser

[nemo-qml-plugin-dbus] Fix parsing of dbus introspection xml.
[nemo-qml-plugin-dbus] Don't try to handle Introspect() call.

Introspect() call is handled internally for QDBusVirtualObject derived classes.
Merge pull request #11 from nemomobile/vdv-devel

[nemo-qml-plugin-dbus] Don't try to handle Introspect() call.
[nemo-qml-plugin-dbus] Allow array of strings arguments in DBus calls
Merge pull request #12 from matthewvogt/typed-array

[nemo-qml-plugin-dbus] Allow array of strings arguments in DBus calls
[nemo-qml-plugin-dbus] Add support for properties to DBusAdaptor.