File pgn-extract-no-buildtime.patch of Package pgn-extract

diff -Naur pgn-extract.orig/argsfile.c pgn-extract/argsfile.c
--- pgn-extract.orig/argsfile.c	2018-11-15 13:43:53.666742842 +0100
+++ pgn-extract/argsfile.c	2018-11-15 13:44:12.266743114 +0100
@@ -240,8 +240,8 @@
     const char **data = help_data;
 
     fprintf(GlobalState.logfile,
-            "pgn-extract %s (%s): a Portable Game Notation (PGN) manipulator.\n",
-            CURRENT_VERSION, __DATE__);
+            "pgn-extract %s: a Portable Game Notation (PGN) manipulator.\n",
+            CURRENT_VERSION);
     fprintf(GlobalState.logfile,
             "Copyright (C) 1994-2017 David J. Barnes (d.j.barnes@kent.ac.uk)\n");
     fprintf(GlobalState.logfile, "%s\n\n", URL);