[PATCH] fix for apache1 syntax highlighter

Hi, Attached is the patch for apache1 SAPI which fixes the issue that the syntax highter doesn't work with output buffering enabled. The patch simply tries to call php_request_shutdown() even under display_source_mode because php_request_startup() is called anytime in prior to the highlight_file() call. If there are no objections, I'll commit this patch shortly. Regards, Moriyoshi