Apple contribution for OSX SSE and iOS NEON optimizations unit tests, thanks to Jordan Hubbard, Ian Ollmann and Hristo Hristov.

For OSX:
cd build
./premake_osx xcode4
for iOS:
cd build
./ios_build.sh
./ios_run.sh

Also integrated the branches/StackAllocation to make it easier to multi-thread collision detection in the near future. It avoids changing the btCollisionObject while performing collision detection.

As this is a large patch, some stuff might be temporarily broken, I'll keep an eye out on issues.

build/autoexp_dat.txt

@@ -0,0 +1,66 @@
+
+;------------------------------------------------------------------------------
+; Microsoft Visual Studio Debug Visualization for Bullet btVector3 and btAlignedObjectArray
+;
+; Copy and paste the contents of this file to the end of autoexp.dat, usually located at
+; C:\Program Files\Microsoft Visual Studio 8\Common7\Packages\Debugger\autoexp.dat
+;------------------------------------------------------------------------------
+
+
+[Visualizer]
+;------------------------------------------------------------------------------
+;  btVector3
+;------------------------------------------------------------------------------
+btVector3{
+	children
+	(
+	    #array
+	    (
+			expr :	($c.m_floats)[$i],  
+			size :	4
+		)
+	)
+	
+    preview
+    ( 
+        #( 
+			"[", 
+            #array
+            (
+				expr :	($c.m_floats)[$i],  
+				size :	4
+			), 
+			"]"
+		)
+	)
+}
+	
+;------------------------------------------------------------------------------
+;  btAlignedObjectArray
+;------------------------------------------------------------------------------
+btAlignedObjectArray<*>{
+	children
+	(
+	    #array
+	    (
+			expr :	($c.m_data)[$i],  
+			size :	$c.m_size
+		)
+	)
+	
+    preview
+    ( 
+        #( 
+			"[", 
+            $c.m_size ,
+            "](", 
+            
+            #array
+            (
+				expr : 	($c.m_data)[$i],  
+				size : 	$c.m_size
+			), 
+			")"
+		)
+	)
+}