Mojo: re-org public/utility and public/environment

mojo/public/utility/lib/thread_local_posix.cc

Index: mojo/public/utility/lib/thread_local_posix.cc
diff --git a/mojo/public/utility/thread_local_posix.cc b/mojo/public/utility/lib/thread_local_posix.cc
similarity index 92%
rename from mojo/public/utility/thread_local_posix.cc
rename to mojo/public/utility/lib/thread_local_posix.cc
index d728e2c8925de4d4cf0ec47f2bc99a5201a36fc2..a566c36312cdbdd7aa5f009ef162ca2d5e8c1016 100644
--- a/mojo/public/utility/thread_local_posix.cc
+++ b/mojo/public/utility/lib/thread_local_posix.cc
@@ -2,10 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "mojo/public/utility/thread_local.h"
+#include "mojo/public/utility/lib/thread_local.h"
 
 #include <assert.h>
-#include <pthread.h>
 
 namespace mojo {
 namespace internal {