Advanced Rogue family: fix some potential buffer overflows.

Some code for determining the score file location assumed that PATH_MAX
would be less than 1024, which cannot be guaranteed.

Advanced Rogue 5 and 7, and XRogue, have had the buffers for the file
name enlarged.  UltraRogue never called the functions, so the code has
been deleted instead.

arogue5/main.c

@@ -61,6 +61,7 @@ main(int argc, char *argv[], char *envp[])
      * get home and options from environment
      */
     strncpy(home,md_gethomedir(),LINELEN);
+    home[LINELEN-1] = '\0';
 
 #ifdef SAVEDIR
     if (argc >= 3 && !strcmp(argv[1], "-n")) {
@@ -82,8 +83,8 @@ main(int argc, char *argv[], char *envp[])
     }
 
 #ifdef SCOREFILE
-    strncpy(score_file, SCOREFILE, LINELEN);
-    score_file[LINELEN - 1] = '\0';
+    strncpy(score_file, SCOREFILE, PATH_MAX);
+    score_file[PATH_MAX - 1] = '\0';
 #else
     /* Get default score file */
     strcpy(score_file, roguedir);