Changes in SAPI modules

• A new SAPI module named cli-server is now available.

• Added CLI option --rz which shows information of the named Zend extension.
• Added shortcut #inisetting=value to change ini settings at run-time in interactive readline CLI
• Added apache compatible functions: apache_child_terminate(), getallheaders(), apache_request_headers() and apache_response_headers() for FastCGI SAPI.
• PHP-FPM: Added process.max setting to control the number of process FPM can fork