ClangStaticAnalyzer: Avoid use of DummyRunConfigurations

This moves the explicit build step into a dependent runWorker,
making the whole setup more aligned with a normal tool run.

Change-Id: Icd01b2e82f7f95774434d2ede04d08a5311b64e7
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/plugins/projectexplorer/runconfiguration.cpp

@@ -616,6 +616,8 @@ public:
             outputFormatter = runConfiguration->createOutputFormatter();
             device = DeviceKitInformation::device(runConfiguration->target()->kit());
             project = runConfiguration->target()->project();
+        } else {
+            outputFormatter = new OutputFormatter();
         }
     }