Squashed commit of the following:

commit e5c24638f98162c3b75b4c67a16b510d38e31341
Author: Mathias Agopian <mathias@google.com>
Date:   Fri Apr 17 14:09:03 2009 -0700

    oops forgot this file.

commit 282642632d0cb12882eecf42e0fdfb2343275de1
Author: Mathias Agopian <mathias@google.com>
Date:   Fri Apr 17 14:07:32 2009 -0700

    use a helper macro for creating Singleton<>'s static attributes instances.
diff --git a/include/utils/Singleton.h b/include/utils/Singleton.h
index ee07df1..2f7c7c2 100644
--- a/include/utils/Singleton.h
+++ b/include/utils/Singleton.h
@@ -49,6 +49,18 @@
     static TYPE* sInstance;
 };
 
+/*
+ * use ANDROID_SINGLETON_STATIC_INSTANCE(TYPE) in your implementation file
+ * (eg: <TYPE>.cpp) to create the static instance of Singleton<>'s attributes,
+ * and avoid to have a copy of them in each compilation units Singleton<TYPE>
+ * is used.
+ */
+
+#define ANDROID_SINGLETON_STATIC_INSTANCE(TYPE)             \
+    template< class TYPE > Mutex Singleton< TYPE >::sLock;  \
+    template<> TYPE* Singleton< TYPE >::sInstance(0);
+
+
 // ---------------------------------------------------------------------------
 }; // namespace android
 
diff --git a/libs/surfaceflinger/BufferAllocator.cpp b/libs/surfaceflinger/BufferAllocator.cpp
index 28fe810..fec7c87 100644
--- a/libs/surfaceflinger/BufferAllocator.cpp
+++ b/libs/surfaceflinger/BufferAllocator.cpp
@@ -34,8 +34,7 @@
 namespace android {
 // ---------------------------------------------------------------------------
 
-template<class BufferAllocator> Mutex Singleton<BufferAllocator>::sLock; 
-template<> BufferAllocator* Singleton<BufferAllocator>::sInstance(0); 
+ANDROID_SINGLETON_STATIC_INSTANCE( BufferAllocator )
 
 Mutex BufferAllocator::sLock;
 KeyedVector<buffer_handle_t, BufferAllocator::alloc_rec_t> BufferAllocator::sAllocList;
diff --git a/libs/ui/BufferMapper.cpp b/libs/ui/BufferMapper.cpp
index e6ca239..85a029b 100644
--- a/libs/ui/BufferMapper.cpp
+++ b/libs/ui/BufferMapper.cpp
@@ -44,8 +44,7 @@
 namespace android {
 // ---------------------------------------------------------------------------
 
-template<class BufferMapper> Mutex Singleton<BufferMapper>::sLock; 
-template<> BufferMapper* Singleton<BufferMapper>::sInstance(0); 
+ANDROID_SINGLETON_STATIC_INSTANCE( BufferMapper )
 
 BufferMapper::BufferMapper()
     : mAllocMod(0)
diff --git a/libs/ui/Surface.cpp b/libs/ui/Surface.cpp
index 47880f5..fb105b3 100644
--- a/libs/ui/Surface.cpp
+++ b/libs/ui/Surface.cpp
@@ -50,8 +50,7 @@
 //  SurfaceBuffer
 // ============================================================================
 
-template<class SurfaceBuffer> Mutex Singleton<SurfaceBuffer>::sLock; 
-template<> SurfaceBuffer* Singleton<SurfaceBuffer>::sInstance(0); 
+ANDROID_SINGLETON_STATIC_INSTANCE( SurfaceBuffer )
 
 SurfaceBuffer::SurfaceBuffer() 
     : BASE(), handle(0), mOwner(false)