Fix segfault on uv_fs_readlink() where target is not a link

[-Wincompatible-pointer-types]

Fix build on php master

Fix PHP-7.4+ build

Fix windows build

Actually, fix zpp usage only on PHP 7.4+

Fix zpp usage for PHP >= 7.3.2

Rename link to nlink in stat to mirror stat()

Fix uv_fs_scandir returning 0 as status instead of true on empty directory

Fix ZTS build

Fix build for newest php-src master

Remove dependency on PHP version for GC_ADDREF macro

PHP 7.3 compatibility

Fix #50: bad fsevent example

wtf, uv_fs_scandir()??? - Prevent walking the loop after dtor

Fix 7.2 build

Do not warn when using closed handles with uv_is_active()

Fully fix uv_async too

I am bad at copying over already fixed code, sigh...

Fix #43 - Add handling for uv pipes within UVStdio objects

Also some refcounting issues within uv_async* and uv_udp*

Fix #44 - prepare 0.2.1

Prepare v0.2.0

Fix PHP 7.1 build and uv_queue_work()

Fix PHP 7.0 and 7.1 builds

Fix refcount upon polling error

libuv will then itself stop the polling and thus refcount needs to be in sync with that

Fix uninitialized php_uv_loop_t * variables