[Lazarus] gtk2 liboverlay Ubuntu Unity

[Marco van de Voort]

On Tue, Jun 26, 2012 at 02:00:52PM +0200, Mattias Gaertner wrote:
> To disable liboverlay for a single application set the environment variable
> LIBOVERLAY_SCROLLBAR to '0' *before* starting the application. There is no way
> to disable liboverlay when the application is already running.

Change the environment in _start (si_c21) before libc initializes based on
libc setenv code (copy)?