Merge branch 'PHP-7.1' into PHP-7.2

* PHP-7.1:
  Upgrade binary SDK version for AppVeyor

diff --cc .appveyor.yml
index 9f6116885b9de6d3eec25c0cbc23c76fb933a93e,5d0ec71aafdae2452c12a3fde0912679401aaa58..ed6ae6abb114e13a6d67032703c56e7f7d62eeab
--- 1/.appveyor.yml
--- 2/.appveyor.yml
+++ b/.appveyor.yml
@@@ -23,8 -23,7 +23,8 @@@ environment
          PHP_BUILD_CACHE_BASE_DIR: c:\build-cache  
          PHP_BUILD_OBJ_DIR: c:\obj
          PHP_BUILD_CACHE_SDK_DIR: c:\build-cache\sdk
-         PHP_BUILD_SDK_BRANCH: php-sdk-2.1.1
+         PHP_BUILD_SDK_BRANCH: php-sdk-2.1.2
 +        PHP_BUILD_CRT: vc15
          # ext and env setup for tests
          #MYSQL_TEST_PASSWD: Password12!
          #MYSQL_TEST_USER: root