qmljs: correct slot name for properties starting with “_”

Task-number: QTCREATORBUG-12214
Change-Id: Ie8009846ce27d4acbc3e9ad4dd7dda73fde39413
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
ios: always write out when a run ends

Currently normal end of an ios run is silent. This looks strange as
the startup writes a string.

Change-Id: I64d082153b11ff6db4d6b1d85bce1da143cf329d
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>