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Arrange that random seeds are as harmonised as they can reasonably
be between interactive and batch use.

[originally from svn r5896]

--- a/mines.c

+++ b/mines.c

@@ -2041,12 +2041,24 @@

 static char *new_game_desc(game_params *params, random_state *rs,

 			   game_aux_info **aux, int interactive)

 {

+    /*

+     * We generate the coordinates of an initial click even if they

+     * aren't actually used. This has the effect of harmonising the

+     * random number usage between interactive and batch use: if

+     * you use `mines --generate' with an explicit random seed, you

+     * should get exactly the same results as if you type the same

+     * random seed into the interactive game and click in the same

+     * initial location. (Of course you won't get the same grid if

+     * you click in a _different_ initial location, but there's

+     * nothing to be done about that.)

+     */

+    int x = random_upto(rs, params->w);

+    int y = random_upto(rs, params->h);

+

     if (!interactive) {

 	/*

 	 * For batch-generated grids, pre-open one square.

 	 */

-	int x = random_upto(rs, params->w);

-	int y = random_upto(rs, params->h);

 	signed char *grid;

 	char *desc;