Rename buildNativeInputs -> nativeBuildInputs

Likewise for propagatedBuildNativeInputs, etc.  "buildNativeInputs"
sounds like an imperative rather than a noun phrase.

pkgs/tools/graphics/enblend-enfuse/default.nix

@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ libtiff libpng lcms libxmi boost mesa freeglut glew ];
 
-  buildNativeInputs = [ perl pkgconfig ];
+  nativeBuildInputs = [ perl pkgconfig ];
 
   patches =
     let

pkgs/tools/graphics/pfstools/default.nix

@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libtiff openexr imagemagick libjpeg qt4 mesa freeglut
     bzip2 libX11 libpng expat ];
 
-  buildNativeInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkgconfig ];
 
   meta = {
     homepage = http://pfstools.sourceforge.net/;

pkgs/tools/graphics/qrencode/default.nix

@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ libpng ];
-  buildNativeInputs = [ pkgconfig ];
+  nativeBuildInputs = [ pkgconfig ];
 
   meta = {
     homepage = http://fukuchi.org/works/qrencode/;