[Feature Request] Add automatically the execute bit to the kept installers

[LukasThyWalls]

Hello.

I saw when you have set to keep the installers, all of them don't have the execute bit property to allow to execute them directly so you need to change the permission to allow executing them.

The feature request is only to add automatically that execute bit when you keep the installers, so you don't need to do it.

Thanks!