Move SSH support into a dedicated library.

It does not belong into libUtils, which is a collection of small
unrelated utility classes.

Task-number: QTCREATORBUG-7218
Change-Id: Id92b9f28678afec93e6f07166adfde6550f38072
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/remotelinux/genericlinuxdeviceconfigurationwizardpages.cpp

@@ -50,6 +50,7 @@ public:
 
 } // namespace Internal
 
+using namespace QSsh;
 using namespace Utils;
 
 GenericLinuxDeviceConfigurationWizardSetupPage::GenericLinuxDeviceConfigurationWizardSetupPage(QWidget *parent) :