QtQuick test: Do not complain about Qt specific arguments
QtQuick test: Do not complain about Qt specific arguments

Commit 1ca5e82cccae0 caused a regression for Qt arguments like
-qmlsjsdebugger=xxx . These are automatically removed from argv by
QCoreApplication, but since we copied argv before instantiating
QCoreApplication this didn't have any effect.

Fix this by moving Q[Core]Application instantiation again before
the parsing and copying of testlib-specific arguments.

Task-number: QTBUG-37793
Change-Id: Ief41640b6cf3251f700a5d24d2e1141233a3888f
Reviewed-by: Friedemann Kleint <1b9f2592239daaec4856ccc1cfb4d2d55b35fb71@digia.com>
Reviewed-by: Liang Qi <0f3d3d9587f4f01263b2640b7eef7a92a160ec94@digia.com>

mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative,mgrunditz/qtdeclarative-2d,qmlc/qtdeclarative