List qmake project files in qbs project

Change-Id: Ib0c68398ce80e1de2ee6a2e4385ffd38baec0bd2
Reviewed-by: Jake Petroules <jake.petroules@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

qtcreator.qbs

@@ -35,6 +35,19 @@ Project {
         }
     }
 
+    Product {
+        name: "qmake project files"
+        files: {
+            var list = ["**/*.pr[io]"];
+            var props = [additionalPlugins, additionalLibs, additionalTools, additionalAutotests];
+            for (var i = 0; i < props.length; ++i) {
+                for (var j = 0; j < props[i].length; ++j)
+                    list.push(props[i][j] + "/**/*.pr[io]");
+            }
+            return list;
+        }
+    }
+
     AutotestRunner {
         Depends { name: "Qt.core" }
         Depends { name: "qtc" }