[Lazarus] TextHint rewrite

[Bart]

On 11/14/16, Ondrej Pokorny via Lazarus <lazarus at lists.lazarus-ide.org> wrote:

> 1.) Unfortunately it's not possible to create the custom paint event
> "PaintAfterInterface" for all TWinControls on Win32. So it doesn't make
> sense to implement it.
> 2.) Some of Lazarus developers don't want to delete the TextHint emulation.
>
> -> For now I rewrote the TextHint emulation a little bit. I hope it's
> better since I at least decoupled the properties from the emulation.

The good news is that GTK 3.2 also supports such a thing natively,
which means that maybe we can move this to widgetset code in the
future.

Bart