Re-Revert "Merge #101508: libraw: 0.20.0 -> 0.20.2"

This reverts commit c778945806.

I believe this is exactly what brings the staging branch into
the right shape after the last merge from master (through staging-next);
otherwise part of staging changes would be lost
(due to being already reachable from master but reverted).

pkgs/applications/science/logic/z3/default.nix

@@ -22,7 +22,8 @@ stdenv.mkDerivation rec {
     sha256 = "1hnbzq10d23drd7ksm3c1n2611c3kd0q0yxgz8y78zaafwczvwxx";
   };
 
-  buildInputs = [ python fixDarwinDylibNames ]
+  nativeBuildInputs = optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
+  buildInputs = [ python ]
   ++ optional javaBindings jdk
   ++ optionals ocamlBindings [ ocaml findlib zarith ]
   ;