(svn r1951) Introduced SeedModChance() (which is like SeedChance() but uses simple modulo instead of bitshifting and multiplication), explained why does it work better, used it in MakeCzechTownName() and added a TODO note about possibly using it in the other town name generators too.

#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