Fix build on Ubuntu Trusty.

To define qIsInf and qIsNaN in older versions of Qt we must include qnumeric.h directly. It will become part of QtGlobal later.

src/libs/vgeometry/vplacelabelitem.cpp

@@ -33,6 +33,7 @@
 #include <QPolygonF>
 #include <QTransform>
 #include <QtGlobal>
+#include <QtCore/qnumeric.h>
 
 //---------------------------------------------------------------------------------------------------------------------
 VPlaceLabelItem::VPlaceLabelItem()

src/libs/vpatterndb/vpiecepath.cpp

@@ -37,6 +37,7 @@
 
 #include <QPainterPath>
 #include <QtGlobal>
+#include <QtCore/qnumeric.h>
 
 namespace
 {