. TODO: Marked off Actually serve files
. Added min(a,b) macro
. Moved header_only from process_get() to struct connection
. MAX_REQUEST_LENGTH from 20000 to 4000
. xrealloc() to strlen+1 in urldecode()
. Made default_reply() take variable arguments like printf
. Mostly implemented process_get()
. Handling of file-not-found
. Handling of other fopen() errors
. Header generation (except Content-Type)
. Made default_replies more specific
. poll_send_header() advances state to DONE if header_only
. Completed poll_send_reply() (implemented REPLY_FROMFILE)