RELEASE-NOTES: synced with a7b38c9d

This release includes the following bugfixes:

 o

 o gnutls-random: check return code for failed random

 o openssl-random: check return code when asking for random

 o http: remove "Curl_http_done: called premature" message

 o cyassl: use time_t instead of long for timeout

 o build-wolfssl: Sync config with wolfSSL 3.10

 o ftp-gss: check for init before use

 o configure: accept --with-libidn2 instead [1]

 o ftp: failure to resolve proxy should return that error code

 o curl.1: add three more exit codes

 o docs/ciphers: link to our own new page about ciphers

 o vtls: s/SSLEAY/OPENSSL - fixes multi_socket timeouts with openssl [2]

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:

  Christian Weisgerber, Daniel Romero, Daniel Stenberg, Ray Satiro,

  (4 contributors)

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

References to bug reports and discussions on issues:

 [1] = https://curl.haxx.se/bug/?i=

 [1] = https://curl.haxx.se/mail/lib-2016-12/0110.html

 [2] = https://curl.haxx.se/bug/?i=1174