A first beta version of the scenProc tool is available for testing now. It is part of the development release package of my tools. The tool is a command line tool to create scenery from data you import. At the moment it can create autogen files from GIS vector data. In the future other scenery processing will probably be added as well. On the FSDeveloper Wiki you can find the manual of the tool as well, it explains the options you can specify in the configuration file.
Let me know how you get along with processing your own data. If there are any suggestions, comments or bug, let me know so that I can improve the tool further. You can use the scenProc forum to discuss this tool.