ios: convert to new logging infrastructure

Change-Id: Ia62a585acfb55c35aa859553d24cb0e20600b46a
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
qmljs: put file specific logs in anonymous namespace

putting file specific log categories in anonymous namespace
avoid the possibility of nameclashes.

Change-Id: I17a07015ffe1c539824fcfcbc2296335d9225dd1
Reviewed-by: Kai Koehne <kai.koehne@digia.com>