PHP 7.0 - 7.1 - 7.2 - 7.3 - 7.4 release of memcached extension. Note that support for
libmemcached 0.x series has been discontinued and the oldest actively tested
version is 1.0.8. It is highly recommended to use version 1.0.18 of
libmemcached.
Fixes
* Fix build with PHP 7.4 release due to ulong typedef removal (#445)