CMake Settings: Make cmake executable field grow.

Task-number: QTCREATORBUG-6791

Change-Id: I1e3df08a2217c105b3c905e3ea4cd9b960353396
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/cmakeprojectmanager/cmakeprojectmanager.cpp

@@ -380,6 +380,7 @@ QWidget *CMakeSettingsPage::createPage(QWidget *parent)
 {
     QWidget *outerWidget = new QWidget(parent);
     QFormLayout *formLayout = new QFormLayout(outerWidget);
+    formLayout->setFieldGrowthPolicy(QFormLayout::ExpandingFieldsGrow);
     m_pathchooser = new Utils::PathChooser;
     m_pathchooser->setExpectedKind(Utils::PathChooser::ExistingCommand);
     formLayout->addRow(tr("Executable:"), m_pathchooser);