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/development/libraries/icu/base.nix

@@ -57,7 +57,7 @@ let
 
     # FIXME: This fixes dylib references in the dylibs themselves, but
     # not in the programs in $out/bin.
-    buildInputs = stdenv.lib.optional stdenv.isDarwin fixDarwinDylibNames;
+    nativeBuildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin fixDarwinDylibNames;
 
     # remove dependency on bootstrap-tools in early stdenv build
     postInstall = stdenv.lib.optionalString stdenv.isDarwin ''