Invert PTZ Controls when Source Orientation = Inverted

[akupsta]

Just mounted my cameras outside and noticed a lack of a feature that would make it a bit easier to manouver the camrea.

Some cameras such as the Toshiba IK-WB15a can be mounted on the cieling and therefore "invert" the image. When the orientiation is corrected in the Monitor Source Orientation config, PTZ controls are not inverted. So pressing UP moves the camera DOWN, LEFT moves camrea RIGHT.

I didn't see a feature to invert PTZ commands. (Unless provisions for this are made in the .pl script controlling PTZ movement).

[zoneminder]

The PTZ controls _should_ be inverted. They certainly used to be. I will check in case it has been broken by other changes.