Implemented FR #65917 (getallheaders() is not supported by the built-in...)

- Implemented apache_request_headers() and getallheaders() alias in CLI server
- Implemented apache_response_headers() in CLI server using FastCGI code

Conflicts:
	NEWS
	UPGRADING
Rewrote test using tcp instead of http:// stream
Removed UPGRADING note

Conflicts:
	UPGRADING
Merge branch 'CLIGetAllHeadersBackport' into PHP-5.5

* CLIGetAllHeadersBackport:
  Removed UPGRADING note
  Rewrote test using tcp instead of http:// stream
  Implemented FR #65917 (getallheaders() is not supported by the built-in...)
Updated NEWS