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.

include/config.h

@@ -508,6 +508,32 @@ typedef unsigned char uchar;
    but it isn't necessary for successful operation of the program */
 #define FREE_ALL_MEMORY             /* free all memory at exit */
 
+/* #define DUMPLOG */  /* End-of-game dump logs */
+#ifdef DUMPLOG
+
+#ifndef DUMPLOG_MSG_COUNT
+#define DUMPLOG_MSG_COUNT   50
+#endif
+
+#ifndef DUMPLOG_FILE
+#define DUMPLOG_FILE        "/tmp/nethack.%n.%d.log"
+/* DUMPLOG_FILE allows following placeholders:
+   %% literal '%'
+   %v version (eg. "3.6.1-0")
+   %u game UID
+   %t game start time, UNIX timestamp format
+   %T current time, UNIX timestamp format
+   %d game start time, YYYYMMDDhhmmss format
+   %D current time, YYYYMMDDhhmmss format
+   %n player name
+   %N first character of player name
+   DUMPLOG_FILE is not used if SYSCF is defined
+*/
+#endif
+
+#endif
+
+
 /* End of Section 4 */
 
 #ifdef TTY_TILES_ESCCODES