PHP7 release of memcached extension. Note that support for libmemcached 0.x series has been discontinued
and the oldest actively tested version is 1.0.2. It is highly recommended to use version 1.0.18 of
libmemcached.
Fixes
* Fix crash when checking session data with older versions of libmemcached (#328)
* Fix crash due to zend_mm_corrupted when fetching session data (#327)