Create a cheater to test strange save/resume cases.

Patch due to Aaron Traas, but needed modification because of code
drift since submission.

cheat.c

@@ -0,0 +1,64 @@
+#define DEFINE_GLOBALS_FROM_INCLUDES
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <time.h>
+#include "advent.h"
+#include "database.h"
+#include "linenoise/linenoise.h"
+#include "newdb.h"
+
+struct game_t game;
+
+long LNLENG, LNPOSN;
+char rawbuf[LINESIZE], INLINE[LINESIZE + 1];
+
+long AMBER, AXE, BACK, BATTERY, BEAR, BIRD, BLOOD,
+     BOTTLE, CAGE, CAVE, CAVITY, CHAIN, CHASM, CHEST,
+     CLAM, COINS, DOOR, DPRSSN, DRAGON, DWARF, EGGS,
+     EMERALD, ENTER, ENTRNC, FIND, FISSURE, FOOD,
+     GRATE, HINT, INVENT, JADE, KEYS,
+     KNIFE, LAMP, LOCK, LOOK, MAGAZINE,
+     MESSAG, MIRROR, NUGGET, NUL, OGRE, OIL, OYSTER,
+     PEARL, PILLOW, PLANT, PLANT2, PYRAMID, RESER, ROD, ROD2,
+     RUBY, RUG, SAPPH, SAY, SIGN, SNAKE,
+     STEPS, STREAM, THROW, TRIDENT, TROLL, TROLL2,
+     URN, VASE, VEND, VOLCANO, WATER;
+
+FILE  *logfp = NULL, *rfp = NULL;
+bool oldstyle = false;
+bool editline = true;
+bool prompt = true;
+
+int main(int argc, char *argv[])
+{
+    FILE *fp = NULL;
+
+    game.lcg_a = 1093;
+    game.lcg_c = 221587;
+    game.lcg_m = 1048576;
+    srand(time(NULL));
+    long seedval = (long)rand();
+    set_seed(seedval);
+
+    /*  Initialize game variables */
+    initialise();
+
+    game.zzword = rndvoc(3, 0);
+    game.newloc = LOC_START;
+    game.loc = LOC_START;
+    game.limit = GAMELIMIT;
+    game.numdie = -1000;
+    game.saved = 1;
+    
+    fp = fopen("cheat_numdie.adv", WRITE_MODE);
+    if (fp == NULL)
+    {
+        printf("Can't open file. Exiting.\n");
+        exit(0);
+    }        
+
+    savefile(fp);
+    printf("cheat: tests/cheat_numdie.adv created.\n");
+    return 0;
+}