clean-up libutils includes
moved Foo.h as first include of Foo.cpp, and
removed redundant includes.
Made NativeHandle non virtual.
Test: run & compile
Bug: n/a
Change-Id: I37fa746cd42c9ba23aba181f84cb6c619386406a
diff --git a/libutils/include/utils/Singleton.h b/libutils/include/utils/Singleton.h
index a989a47..bdb2332 100644
--- a/libutils/include/utils/Singleton.h
+++ b/libutils/include/utils/Singleton.h
@@ -18,9 +18,12 @@
#define ANDROID_UTILS_SINGLETON_H
#include <stdint.h>
+
+// some vendor code assumes they have atoi() after including this file.
+#include <stdlib.h>
+
#include <sys/types.h>
#include <utils/Mutex.h>
-#include <utils/threads.h>
#include <cutils/compiler.h>
namespace android {
