Provide a Qt5 binding for FreePascal that may be of use to provide the Lazarus
LCL library with a Qt interface

This binding does not aim to cover the whole Qt5 framework, but only just
enough to satisfy the LCL needs. If any LCL/Qt developer needs an extra class,
just ask and it will be added promptly. Some of the methods that have parameters
based upon templates have been omitted.