make the gbuildtojson output debugable.

Added a NEWLINE after each JSON variable, this makes the files
easier readable and has no impact on performance.

Change-Id: I5610c79ba74d6d34b7c4bacd0ba8626d37cb4e70

solenv/gbuildtojson/gbuildtojson.cxx

@@ -75,7 +75,7 @@ int main(int argc, char** argv)
         if(first)
             first =false;
         else
-            cout << ", ";
+            cout << "," << endl;
         string varupper(varandfile.first);
         for(auto& c : varupper)
             if(c != '_')