mostly core and analyzer: more id-fication

Change-Id: Ic794fdc6a582f4a03d84b6220c59111044c753b9
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/valgrind/memchecktool.h

@@ -93,7 +93,7 @@ class MemcheckTool : public Analyzer::IAnalyzerTool
 public:
     MemcheckTool(QObject *parent);
 
-    QByteArray id() const;
+    Core::Id id() const;
     QString displayName() const;
     QString description() const;