Merge pull request #267659 from a-n-n-a-l-e-e/deliantra-server

deliantra-server: use perl536; fix build

pkgs/top-level/all-packages.nix

···
 
   deliantra-server = callPackage ../games/deliantra/server.nix {
     stdenv = gcc10StdenvCompat;
+    # perl538 defines 'struct object' in sv.h. many conflicts result
+    perl = perl536;
+    perlPackages = perl536Packages;
   };
   deliantra-arch = callPackage ../games/deliantra/arch.nix {
     stdenv = gcc10StdenvCompat;