[src] copy about NGX_HTTP_CACHE code from ngx_http_upstream
[src] copy about NGX_HTTP_CACHE code from ngx_http_upstream

rryqszq4/ngx_php,rryqszq4/ngxphp,rryqszq4/ngx_php,rryqszq4/ngx_php,rryqszq4/ngx_php,rryqszq4/ngx_php,rryqszq4/ngx_php