Use new packInclude feature to include native assets

- Now Kestrel won't break when people overwrite the build.cmd

KestrelHttpServer.sln

@@ -9,7 +9,6 @@ Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.AspNet.Server.Kes
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{7972A5D6-3385-4127-9277-428506DD44FF}"
 	ProjectSection(SolutionItems) = preProject
-		build\_custom-goals.shade = build\_custom-goals.shade
 		build.cmd = build.cmd
 		global.json = global.json
 		makefile.shade = makefile.shade

build/_custom-goals.shade

@@ -1,40 +0,0 @@
-use assembly="System.IO.Compression.FileSystem, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
-use assembly="System.IO.Compression, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
-use namespace="System.IO"
-use namespace="System.IO.Compression"
-use namespace="System.Net"
-
-#add-files target="compile"
-  var each='var nupkgFile in Files.Include("artifacts\\build\\Microsoft.AspNet.Server.Kestrel.*.nupkg").Where(x=>!x.EndsWith("symbols.nupkg"))'
-    log info='Adding content to ${nupkgFile}'
-    var archive='${ZipFile.Open(nupkgFile, ZipArchiveMode.Update)}'
-    @{
-        archive.CreateEntryFromFile(
-            "src/Microsoft.AspNet.Server.Kestrel/native/windows/amd64/libuv.dll", 
-            "native/windows/amd64/libuv.dll");
-        archive.CreateEntryFromFile(
-            "src/Microsoft.AspNet.Server.Kestrel/native/windows/x86/libuv.dll", 
-            "native/windows/x86/libuv.dll");
-        archive.CreateEntryFromFile(
-            "src/Microsoft.AspNet.Server.Kestrel/native/darwin/universal/libuv.dylib", 
-            "native/darwin/universal/libuv.dylib");
-
-        XDocument doc;
-        var entry = archive.GetEntry("[Content_Types].xml");
-        using (var stream = entry.Open())
-        {
-            doc = XDocument.Load(stream);
-        }
-        doc.Root.Add(
-            new XElement(
-                XName.Get("Default", "http://schemas.openxmlformats.org/package/2006/content-types"),
-                new XAttribute("Extension", "dylib"),
-                new XAttribute("ContentType", "application/octet")
-            ));
-        using (var stream = entry.Open())
-        {
-            doc.Save(stream);
-        }
-
-        archive.Dispose();
-    }

src/Microsoft.AspNet.Server.Kestrel/project.json

@@ -44,5 +44,10 @@
       "dnu restore ../../tools/Microsoft.AspNet.Server.Kestrel.GeneratedCode",
       "dnx --appbase ../../tools/Microsoft.AspNet.Server.Kestrel.GeneratedCode Microsoft.Dnx.ApplicationHost run Http/FrameHeaders.Generated.cs"
     ]
+  },
+  "packInclude": {
+    "native/darwin/universal/": "native/darwin/universal/*",
+    "native/windows/amd64/": "native/windows/amd64/*",
+    "native/windows/x86/": "native/windows/x86/*"
   }
 }