Adding a PEAR_LOG_TYPE_SAPI constant to reflect the new error_log()

message_type value that was added in PHP 5.2.7.

Log.php

@@ -24,6 +24,7 @@
 define('PEAR_LOG_TYPE_MAIL',    1); /* Use PHP's mail() function */
 define('PEAR_LOG_TYPE_DEBUG',   2); /* Use PHP's debugging connection */
 define('PEAR_LOG_TYPE_FILE',    3); /* Append to a file */
+define('PEAR_LOG_TYPE_SAPI',    4); /* Use the SAPI logging handler */
 
 /**
  * The Log:: class implements both an abstraction for various logging

docs/guide.txt

@@ -437,6 +437,9 @@ parameter.
 | ``PEAR_LOG_TYPE_FILE``    | Log events will be appended to the file named |
 |                           | by the ``destination`` value.                 |
 +---------------------------+-----------------------------------------------+
+| ``PEAR_LOG_TYPE_SAPI``    | Log events will be sent directly to the SAPI  |
+|                           | logging handler.                              |
++---------------------------+-----------------------------------------------+
 
 .. _error_log(): http://www.php.net/error_log
 .. _mail(): http://www.php.net/mail