using native architecture for development builds only, saves half of the compiles

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43984 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/wxWindows.xcodeproj/project.pbxproj

@@ -4568,10 +4568,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
-				ARCHS = (
-					i386,
-					ppc,
-				);
+				ARCHS = "$(NATIVE_ARCH)";
 				DEBUG_INFORMATION_FORMAT = stabs;
 				DYLIB_COMPATIBILITY_VERSION = 2.6;
 				DYLIB_CURRENT_VERSION = 2.6.0;