php.extensions.mysqlnd: Fix compression support
php.extensions.mysqlnd: Fix compression support

HAVE_ZLIB has to be defined in mysqlnd.h for compression support to be
turned on, but the configure script doesn't actually define it even
when zlib is available.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs