Translate comments in config.m4 from Japanese to English

The comments in the config.m4 file have been translated from Japanese to English for better understandability and maintainability. This includes comments for configuration macros, initialization of PECL extension, enabling the extension, and more. This is important for developers who are not familiar with Japanese.

config.m4

@@ -1,37 +1,37 @@
 dnl $Id$
 dnl config.m4 for extension rayaop
 
-dnl PECLの設定マクロをインクルード
+dnl Include PECL configuration macro
 dnl link https://github.com/php/pecl-tools/blob/master/autoconf/pecl.m4
 sinclude(./autoconf/pecl.m4)
 
-dnl PHP実行ファイルの検出マクロをインクルード
+dnl Include macro for detecting PHP executable
 dnl link https://github.com/php/pecl-tools/blob/master/autoconf/php-executable.m4
 sinclude(./autoconf/php-executable.m4)
 
-dnl PECL拡張の初期化
+dnl Initialize PECL extension
 dnl link https://github.com/php/pecl-tools/blob/master/pecl.m4#L229
 PECL_INIT([rayaop])
 
-dnl 拡張機能を有効にするかどうかの設定オプションを追加
+dnl Add configuration option to enable the extension
 dnl link https://www.gnu.org/software/autoconf/manual/autoconf-2.68/html_node/External-Shell-Variables.html
 PHP_ARG_ENABLE(rayaop, whether to enable rayaop, [ --enable-rayaop   Enable rayaop])
 
-dnl 拡張機能が有効な場合の処理
+dnl Process if the extension is enabled
 if test "$PHP_RAYAOP" != "no"; then
-  dnl 拡張機能が有効かどうかを定義
+  dnl Define whether the extension is enabled
   dnl link https://www.gnu.org/software/autoconf/manual/autoconf-2.68/html_node/Defining-Variables.html
   AC_DEFINE(HAVE_RAYAOP, 1, [whether rayaop is enabled])
 
-  dnl PHPの新しい拡張機能を追加
+  dnl Add new PHP extension
   dnl link https://www.phpinternalsbook.com/build_system/build_system.html
   PHP_NEW_EXTENSION(rayaop, rayaop.c, $ext_shared)
 
-  dnl Makefileフラグメントを追加
+  dnl Add Makefile fragment
   dnl link https://www.phpinternalsbook.com/build_system/build_system.html#php-add-makefile-fragment
   PHP_ADD_MAKEFILE_FRAGMENT
 
-  dnl ヘッダーファイルのインストール指示を追加
+  dnl Add instruction to install header files
   dnl link https://www.phpinternalsbook.com/build_system/build_system.html#php-install-headers
   PHP_INSTALL_HEADERS([ext/rayaop], [php_rayaop.h])
 fi