581e519fb5
1) When detaching, don't try to close things we shouldn't (after doing the header). Specifically, mip->mi_head_end was not getting set correctly in mime_sendmessage(). 2) Change paging to be closer to its old behavior: next, dt, and dp should only page if the crt variable is set; and don't automatically page most other commands - the user can always pipe them into more.