busybox

httpd: make it possible to use system passwords for auth

function                                             old     new   delta
check_user_passwd                                    320     467    +147
httpd_main                                           760     757      -3

Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>