RELEASE-NOTES: synced with c4eb10e2

 o libcurl-multi.3: mention curl_multi_wait [10]

 o ABI doc: use secure URL

 o http: move HTTP/2 cleanup code off http_disconnect() [11]

 o libcurl-thread.3: Warn memory functions must be thread safe [12]

 o curl_global_init_mem.3: Warn threaded resolver needs thread safe funcs [13]

 o docs: formpost needs the full size at start of upload [14]

 o curl_gssapi: remove 'const' to fix compiler warnings

 o SSH: three state machine fixups [15]

This release includes the following known bugs:

This release would not have looked like this without help, code, reports and

advice from friends like these:

  Cédric Connes, Dan Fandrich, Daniel Stenberg, David Woodhouse, Feist Josselin,

  Gustavo Grieco, John E. Malmberg, Kamil Dudka, Lior Kaplan, Marcel Raad,

  Michael Kaufmann, Michał Fita, Patrick Monnerat, Paul Howarth, Ray Satiro,

  Roger Leigh, Stefan Bühler, Štefan Kremeň, Steve Holme, Tatsuhiro Tsujikawa,

  Terri Oda, Tim Stack, Tomas Tomecek, TJ Saunders, Viktor Szakáts,

  Cédric Connes, Dan Fandrich, Daniel Stenberg, David Woodhouse, Eric Ridge,

  Feist Josselin, Gustavo Grieco, John E. Malmberg, Kamil Dudka, Lior Kaplan,

  Marcel Raad, Michael Kaufmann, Michał Fita, Patrick Monnerat, Paul Howarth,

  Ray Satiro, Roger Leigh, Stefan Bühler, Štefan Kremeň, Steve Holme,

  Tatsuhiro Tsujikawa, Terri Oda, Tim Stack, TJ Saunders, Tomas Tomecek,

  Viktor Szakáts,

  (26 contributors)

        Thanks! (and sorry if I forgot to mention someone)

 [9] = http://curl.haxx.se/libcurl/c/CURLOPT_SSL_OPTIONS.html

 [10] = https://github.com/bagder/curl/issues/356

 [11] = https://bugzilla.redhat.com/1248389

 [12] = http://curl.haxx.se/mail/lib-2015-07/0149.html

 [13] = http://curl.haxx.se/mail/lib-2015-07/0149.html

 [14] = http://curl.haxx.se/bug/?i=360

 [15] = http://curl.haxx.se/bug/?i=357