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.

Test/Source/TestList.h

@@ -0,0 +1,28 @@
+//
+//  TestList.h
+//  BulletTest
+//
+//  Copyright (c) 2011 Apple Inc.
+//
+
+#ifndef BulletTest_TestList_h
+#define BulletTest_TestList_h
+
+#ifdef __cplusplus
+extern "C" { 
+#endif
+
+    
+typedef struct TestDesc
+{
+    const char *name;
+    int (*test_func)(void);     // return 0 for success, non-zero for failure
+}TestDesc;
+
+extern TestDesc  gTestList[];
+    
+#ifdef __cplusplus
+}
+#endif
+
+#endif