WRP Mass edit

[jetelain]

I wanted to make a winter version of X-Cam Taunus in a less than a day work, so I've made an utility to mass edit a wrp file.

It allows to replace a p3d by an other (normal version by winter version of tree for example). It also allows to replace ground material and satellite textures (for the same reason). It includes a lightweight ODOL reader to grab some geometry informations (to fix altitude if origin and replacement object have not the same size).