Add end-of-game dumplogs

This is based on the "new" dumplog patch for 3.6.0, by Maxime Bacoux.

Define DUMPLOG to enable. By default only enabled for the TTY linux.

src/pline.c

@@ -14,6 +14,10 @@ static char *FDECL(You_buf, (int));
 static void FDECL(execplinehandler, (const char *));
 #endif
 
+#ifdef DUMPLOG
+char* saved_plines[DUMPLOG_MSG_COUNT] = {0};
+#endif
+
 /*VARARGS1*/
 /* Note that these declarations rely on knowledge of the internals
  * of the variable argument handling stuff in "tradstdc.h"
@@ -87,6 +91,15 @@ VA_DECL(const char *, line)
         return;
     }
 
+#ifdef DUMPLOG
+    /* We hook here early to have options-agnostic output. */
+    free(saved_plines[DUMPLOG_MSG_COUNT - 1]);
+    for (ln = 0; ln < DUMPLOG_MSG_COUNT - 1; ++ln)
+        saved_plines[DUMPLOG_MSG_COUNT - ln - 1] = saved_plines[DUMPLOG_MSG_COUNT - ln - 2];
+    saved_plines[0] = malloc(strlen(line) + 1);
+    (void) strcpy(saved_plines[0], line);
+#endif
+
     msgtyp = msgtype_type(line, no_repeat);
     if (msgtyp == MSGTYP_NOSHOW
         || (msgtyp == MSGTYP_NOREP && !strcmp(line, prevmsg)))