Merge branch 'master' into jgrpp-beta

# Conflicts:
#	.github/workflows/commit-checker.yml
#	src/company_cmd.cpp
#	src/console_cmds.cpp
#	src/crashlog.cpp
#	src/lang/english.txt
#	src/lang/german.txt
#	src/lang/indonesian.txt
#	src/lang/japanese.txt
#	src/lang/korean.txt
#	src/lang/swedish.txt
#	src/linkgraph/linkgraphjob.cpp
#	src/linkgraph/mcf.cpp
#	src/network/core/tcp.cpp
#	src/network/core/tcp.h
#	src/network/core/tcp_game.h
#	src/network/core/udp.h
#	src/network/network.cpp
#	src/network/network_admin.cpp
#	src/network/network_admin.h
#	src/network/network_chat_gui.cpp
#	src/network/network_client.cpp
#	src/network/network_client.h
#	src/network/network_func.h
#	src/network/network_internal.h
#	src/network/network_server.cpp
#	src/network/network_server.h
#	src/newgrf.cpp
#	src/newgrf_station.cpp
#	src/order_gui.cpp
#	src/rail_cmd.cpp
#	src/saveload/saveload.cpp
#	src/settings.cpp
#	src/settings_gui.cpp
#	src/settings_internal.h
#	src/settings_type.h
#	src/station_cmd.cpp
#	src/stdafx.h
#	src/table/currency_settings.ini
#	src/table/misc_settings.ini
#	src/table/settings.h.preamble
#	src/table/settings.ini
#	src/terraform_cmd.cpp
#	src/timetable_gui.cpp
#	src/train_cmd.cpp
#	src/tree_cmd.cpp
#	src/water_cmd.cpp

src/stdafx.h

@@ -33,6 +33,7 @@
 #if defined(__HAIKU__)
 #	include <SupportDefs.h>
 #	include <unistd.h>
+#	define _DEFAULT_SOURCE
 #	define _GNU_SOURCE
 #	define TROUBLED_INTS
 #endif
@@ -130,6 +131,7 @@
 	/* Warn about functions using 'printf' format syntax. First argument determines which parameter
 	 * is the format string, second argument is start of values passed to printf. */
 	#define WARN_FORMAT(string, args) __attribute__ ((format (printf, string, args)))
+	#define WARN_TIME_FORMAT(string) __attribute__ ((format (strftime, string, 0)))
 	#define FINAL final
 
 	/* Use fallthrough attribute where supported */
@@ -154,6 +156,7 @@
 #	define NORETURN
 #	define CDECL
 #	define WARN_FORMAT(string, args)
+#	define WARN_TIME_FORMAT(string)
 #	define FINAL
 #	define FALLTHROUGH
 #	include <malloc.h>
@@ -202,6 +205,7 @@
 
 #	define CDECL _cdecl
 #	define WARN_FORMAT(string, args)
+#	define WARN_TIME_FORMAT(string)
 #	define FINAL final
 
 	/* fallthrough attribute, VS 2017 */