Use better terminology for marking items to be excluded from Xcode build.

modules/xcode/xcode_project.lua

@@ -108,7 +108,7 @@
 		 		node.isResource = xcode.isItemResource(prj, node)
 
 		 		-- assign build IDs to buildable files
-		 		if xcode.getbuildcategory(node) and not node.nobuild then
+				if xcode.getbuildcategory(node) and not node.excludefrombuild then
 		 			node.buildid = xcode.newid(node.name, "build", node.path)
 		 		end
 
@@ -153,7 +153,7 @@
 
 		-- don't link the dependency if it's a dependency only
 		if build == false then
-			node.nobuild = true
+			node.excludefrombuild = true
 		end
 	end