RemoteLinux: More preparations for introducing an abstract device class.

- Introduce clone() method.
- Rename "osType" to "type" and "deviceType" to "machineType".
- Move machine type display out of generic settings widget.
- Put only immutable attributes into the device constructor and set the
others via setters. As part of this, also give the
SshConnectionParameters a default proxy type. The necessity to give one
to the constructor explicitly was for historical reasons.

Change-Id: I84757b1b2d6371544b9ab1f3290973e5498176ce
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/plugins/valgrind/valgrindrunner.cpp

@@ -53,8 +53,7 @@ public:
           process(0),
           channelMode(QProcess::SeparateChannels),
           finished(false),
-          startMode(Analyzer::StartLocal),
-          connParams(Utils::SshConnectionParameters::DefaultProxy)
+          startMode(Analyzer::StartLocal)
     {
     }