changed pcre #ifdef to reflect nginx's pcre api change in nginx 1.3.x
changed pcre #ifdef to reflect nginx's pcre api change in nginx 1.3.x

yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx,yeahdongcn/SEnginx