Installation from sources
To do that's you need existing Ultracopier folder to see the folder structure, it will be your example. If you have other platform than the example structure you need change the architecture into informations.xml.
You need compile all .pro found into the same architecture than your example. If you change of architecture, some plugins can't work because are specific to a architecture.
You can compile the .pro file with Qt create, you will found it into the Qt SDK.