Sync #if/ifdef/defined (#14508)

This syncs CPP macro conditions:
- _WIN32
- _WIN64
- HAVE_ALLOCA_H
- HAVE_ALPHASORT
- HAVE_ARPA_INET_H
- HAVE_CONFIG_H
- HAVE_DIRENT_H
- HAVE_DLFCN_H
- HAVE_GETTIMEOFDAY
- HAVE_LIBDL
- HAVE_POLL_H
- HAVE_PWD_H
- HAVE_SCANDIR
- HAVE_SYS_FILE_H
- HAVE_SYS_PARAM_H
- HAVE_SYS_SOCKET_H
- HAVE_SYS_TIME_H
- HAVE_SYS_TYPES_H
- HAVE_SYS_WAIT_H
- HAVE_UNISTD_H
- PHP_WIN32
- ZEND_WIN32

These are either undefined or defined to 1 in Autotools and Windows.

Follow up of GH-5526 (-Wundef).

sapi/cli/php_cli_server.c

@@ -36,17 +36,17 @@
 #include <unixlib/local.h>
 #endif
 
-#if HAVE_SYS_TIME_H
+#ifdef HAVE_SYS_TIME_H
 #include <sys/time.h>
 #endif
-#if HAVE_UNISTD_H
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 
 #include <signal.h>
 #include <locale.h>
 
-#if HAVE_DLFCN_H
+#ifdef HAVE_DLFCN_H
 #include <dlfcn.h>
 #endif
 
@@ -222,7 +222,7 @@ static const php_cli_server_http_response_status_code_pair template_map[] = {
 
 static int php_cli_server_log_level = 3;
 
-#if HAVE_UNISTD_H || defined(PHP_WIN32)
+#if defined(HAVE_UNISTD_H) || defined(PHP_WIN32)
 static int php_cli_output_is_tty = OUTPUT_NOT_CHECKED;
 #endif
 
@@ -1164,7 +1164,7 @@ static bool php_cli_server_content_sender_pull(php_cli_server_content_sender *se
 	return true;
 } /* }}} */
 
-#if HAVE_UNISTD_H
+#ifdef HAVE_UNISTD_H
 static int php_cli_is_output_tty(void) /* {{{ */
 {
 	if (php_cli_output_is_tty == OUTPUT_NOT_CHECKED) {
@@ -1199,7 +1199,7 @@ static void php_cli_server_log_response(php_cli_server_client *client, int statu
 		}
 	}
 
-#if HAVE_UNISTD_H || defined(PHP_WIN32)
+#if defined(HAVE_UNISTD_H) || defined(PHP_WIN32)
 	if (CLI_SERVER_G(color) && php_cli_is_output_tty() == OUTPUT_IS_TTY) {
 		if (effective_status >= 500) {
 			/* server error: red */