Description:
------------
setHeader() function in Yaf_Response_Abstract is not implemented, I had to change the function to get it to work:

PHP_METHOD(yaf_response, setHeader) {
	char *name,*value;
	uint name_len,value_len = 0;
	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|s", &name, &name_len,&value, &value_len) == FAILURE) {
		RETURN_FALSE;
	}
	sapi_header_line ctr = {0};

	ctr.line_len 		= spprintf(&(ctr.line), 0, "%s: %s", name, value);
	ctr.response_code 	= 0;
	if (sapi_header_op(SAPI_HEADER_REPLACE, &ctr TSRMLS_CC) == SUCCESS) {
		efree(ctr.line);
		RETURN_TRUE;
	}
	efree(ctr.line);
	RETURN_FALSE;
}

Test script:
---------------
<?php
class TestController extends Yaf_Controller_Abstract
{
public function indexAction(){
$this->getResponse()->setHeader('max-age',7200);
}
}

Expected result:
----------------
http header should be set when setHeader() is called.

Actual result:
--------------
See above - patch included as part of description.