Register stack with Valgrind only once
lwan_openat() should handle EINTR as well
Removing some "slops"

Just re-ordering some field inside structures to avoid extra memory
required by memory-alignment.
Make sure no negative Content-Length can be passed to _read_post_data()
Rename ``qs'' to ``kvs'' in _parse_urlencoded_keyvalues()

``qs'' was a leftover from a recent change (this function used to parse the
query string values).
lwan_connection_get_fd() is a pure function
Update TODO list
Add SSE and chunked encoding to TODO list
Implement Basic HTTP authorization support

Mechanism is working (add HANDLER_MUST_AUTHORIZE to HANDLER_PARSE_MASK to
test; username is "admin" and password is "tijolo22").  However, there's
currently no way to specify a list of username+password pairs.
Add OSv port to TODO list
Fix OSv URL
Add TODO to generating mime-types.h on build time
Add preliminary chunked encoding support for responses
Reduce number of call sites to log_request()
Print cache statistics on cache shutdown
TODO list has been moved to GitHub issues, deleting TODO file
Bugs have been moved to GitHub issues, removing BUGS file
Abort coroutine if resizing strbuf fails while sending chunk
Do not proceed with lwan_response() if headers were already sent
No need for hello_world() prototype to exist