Parameters for random terrain generation have wrong scale

[Carsten]

Some of the parameters in the Terrain Generation dialog have wrong scale.

For example, the values for Lucanarity should only be a tenth of the indicated value (e.g. 2.0 instead of 20).

This is probably a result of wxSpinCtrlDouble not being available in pre-2.9 issues of wxWidgets. The integer controls should be replaced with properly ranged wxSpinCtrlDouble equivalents.