libevent/2.1.12+1

Changes in version 2.1.12-stable (05 Jul 2020)

 This release contains mostly bug fixes (I decided not to port some features
 that can be ported even without ABI breakage, if you cannot find feature that
 you are interested in, please give us a note!)

 Since 2.1.12 libevent will use github actions as main CI, since
 it recommends itself better then travis/appveyor (and had been removed from
 upstream).

 Look carefully at "slightly touches the behaviour" section.

 Below you will find some of changes (this list has been cleaned up from the
 patches that touches only tests and similar):

 CI:
  o Backport github actions to 2.1 (be3acd7c Azat Khuzhin)
  o Merge branch 'event_rpcgen.py-cleanup' (f0ded5f3, 48e04887 Enji Cooper)
  o Add API/ABI checker (using LVC) (709210d4, 2af1f6cc yuangongji)

 test:
  o tinytest: support timeout on Windows (794e8f75 yuangongji)
  o Merge branch 'osx-clock' (e85afbe3 Azat Khuzhin)
  o test-ratelim: calculate timers bias (for slow CPUs) to avoid false-positive (8ad26d0b Azat Khuzhin)

 fixes:
  o buffer: do not pass NULL to memcpy() from evbuffer_pullup() (5b063049 Azat Khuzhin)
  o http: fix undefined-shift in EVUTIL_IS*_ helpers (6b8d02a7 Azat Khuzhin)
  o Check error code of evhttp_add_header_internal() in evhttp_parse_query_impl() (97e28f09 Azat Khuzhin)
  o http: fix EVHTTP_CON_AUTOFREE in case of timeout (and some else) (1be25938 Azat Khuzhin)
  o evdns: Add additional validation for values of dns options (c2972453 ayuseleznev)
  o There is typo in GetAdaptersAddresses windows library. It should be iphlpapi.dll (891adda9 Aleksandr-Melnikov)
  o Merge branch 'EV_CLOSED-and-EV_ET-fixes' (db2efdf5 Azat Khuzhin)
  o Fix memory corruption in EV_CLOSURE_EVENT_FINALIZE with debug enabled (8ccd8f56 Jan Kasiak)
  o increase segment refcnt only if evbuffer_add_file_segment() succeeds (30662a3c yuangongji)
  o evdns: fix a crash when evdns_base with waiting requests is freed (6f8e0e97 ayuseleznev)
  o event_base_once: fix potential null pointer threat (2e9ceb16 chenguolong)
  o http: do not assume body for CONNECT (1b42270b Azat Khuzhin)
  o evbuffer_add_file: fix freeing of segment in the error path (5f017bde Azat Khuzhin)
  o Fix checking return value of the evdns_base_resolv_conf_parse() (fc51bf2c Azat Khuzhin)
  o Merge branch 'fix-signal-leak' (poll/select now needs reinit) (1c9cc07b Azat Khuzhin)

 improvements:
  o evutil_time: improve evutil_gettimeofday on Windows (a8219143 Nick Grifka)
  o Support EV_CLOSED on linux for poll(2) (2530e7c6 Azat Khuzhin)
  o Parse IPv6 scope IDs. (f602211f Philip Homburg)
  o evutil_time: Implements usleep() using wait funtion on Windows (d42240d1 yuangongji)
  o evutil_time: detect and use _gmtime64_s()/_gmtime64() (f4a6152c yuangongji)

 slightly touches the behaviour:
  o bufferevent: allow setting priority on socket and openssl type (4dd3acdd Nicolas J. Bouliane)
  o Fix EV_CLOSED detection/reporting (epoll only) (1df324d4 Azat Khuzhin) (XXX)
  o Revert "Warn if forked from the event loop during event_reinit()" (71f5c0d3 Azat Khuzhin)

 samples:
  o https-client: load certificates from the system cert store on Windows (e9478640 yuangongji)

 build fixes:
  o Do not use sysctl.h on linux (it had been deprecated) (d2871a37 Azat Khuzhin)
  o cmake: avoid problems from use of CMAKE_USE_PTHREADS_INIT (a62ec765 Paul Osborne)
  o Update list of cmake files for autotools dist archive (2016f017 Azat Khuzhin)
  o LibeventConfig.cmake: restore CMAKE_FIND_LIBRARY_SUFFIXES and LIBEVENT_STATIC_LINK default (640f9cf6 Mario Emmenlauer)
  o cmake: fix getaddrinfo checking error (dea51c2e yuangongji)
  o autoconf: fix getaddrinfo checking errors on mingw (b9bf7fa7 yuangongji)
  o Do not use shared global structures on CYGWIN (8a9b5655 Azat Khuzhin)
  o Added uninstall target check to cmakelists (3f1fb1f9 Dimo Markov)
  o Fix compilation without OPENSSL_API_COMPAT (921bdcdd Azat Khuzhin)
  o cmake: improve package config file (1c047618, baec84f2 yuangongji)
  o Link with iphlpapi only on windows (976f7d34 Azat Khuzhin)
  o autotools: fails build when need but can not find openssl (93174bb5 yuangongji)
  o Merge branch 'http-connect' (e2424229 Azat Khuzhin)
  o Fix compat with NetBSD >= 10 (5febb4e1 Kamil Rytarowski)
  o cmake: fix getrandom() detection (e0e5f3bd Azat Khuzhin)
  o arc4random: replace sysctl() with getrandom (on linux) (66ec78fd Azat Khuzhin)
  o Upgrade autoconf (after upgrading minimum required to 2.67) (45da7d9d yuangongji)
  o eliminate some C4267 warnings in Windows (9e468c77 yuangongji)
  o autotools: attach doxygen target into all target (5d1e8570 yuangongji)
  o cmake: attach doxygen target into all target (7a85300a yuangongji)
  o Change the minimum version of automake to 1.13 and autoconf to 2.67 (fdb8fb66 ygj6)
  o Add Uninstall.cmake.in into dist archive (877f2355 Azat Khuzhin)

Changes in version 2.1.11-stable (01 Aug 2019)

 This release contains one ABI breakage fix (that had been introduced in
 2.1.10, and strictly speaking this... More