Use regedit to register event source

ext/win32std is unmaintained for years, so it is highly unlikely that
it is available.  We therefore use regedit instead to register the
event source.  We also remove the bundled syslog.reg, since it is of no
use, unless generated for the respective installation.

.gitignore

@@ -208,6 +208,7 @@ php
 /win32/*.positions
 /win32/*.suo
 /win32/ext
+/win32/syslog.reg
 /win32/wsyslog.h
 
 # Standard object files generated by Visual Studio

win32/build/Makefile

@@ -264,3 +264,4 @@ really-install:
 	@echo Registering event source with syslog (requires admin rights)
 	@echo It's okay for this step to fail:
 	-$(PHP_PREFIX)\php.exe -n -dextension_dir=$(PHP_PREFIX) win32/build/registersyslog.php $(PHP_PREFIX)\$(PHPDLL)
+	-regedit /s win32\syslog.reg

win32/build/registersyslog.php

@@ -1,33 +1,10 @@
 <?php
 
-/* This script sets up an event source for use by the php syslog() function. */
-
-if (!extension_loaded("win32std")) {
-	@dl("php_win32std.dll");
-}
+/* This script generates the .reg file to set up an event source for use by the php syslog() function. */
 
 $PATH = "SYSTEM\\CurrentControlSet\\Services\\Eventlog\\Application\\PHP-" . phpversion();
 
 $dll = $argv[1];
-
-if (extension_loaded("win32std")) {
-	$key = @reg_create_key(HKEY_LOCAL_MACHINE, $PATH, KEY_ALL_ACCESS);
-
-	if (!$key)
-		$key = reg_open_key(HKEY_LOCAL_MACHINE, $PATH, KEY_ALL_ACCESS);
-
-	if ($key) {
-		reg_set_value($key, "TypesSupported", REG_DWORD, 7) or die("Types");
-		reg_set_value($key, "EventMessageFile", REG_SZ, $dll) or die("EventMessageFile");
-
-		syslog(LOG_NOTICE, "Registered PHP Event source");
-	} else {
-		echo "Could not register event source\n";
-	}
-}
-
-/* let's also generate/update the bundled .reg file */
-
 $dll = addslashes($dll);
 
 file_put_contents("win32/syslog.reg", <<<REG
@@ -40,5 +17,4 @@ REGEDIT4
 REG
 );
 
-
 ?>

win32/syslog.reg

@@ -1,5 +0,0 @@
-REGEDIT4
-
-[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\PHP-7.3.0-dev]
-"TypesSupported"=dword:00000007
-"EventMessageFile"="g:\\test\\srctrunkinstall\\php7ts.dll"