(svn r2407) Use {Get,Is}TileOwner to get/check the owner of a tile and fix some bogus reads of _map_owner
#ifndef SCREENSHOT_H
#define SCREENSHOT_H
void InitializeScreenshotFormats(void);
const char *GetScreenshotFormatDesc(int i);
void SetScreenshotFormat(int i);
bool MakeScreenshot(void);
bool MakeWorldScreenshot(int left, int top, int width, int height, int zoom);
#endif