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/premake4.lua

@@ -0,0 +1,23 @@
+
+project "AppUnitTest"
+
+if _OPTIONS["ios"] then
+	kind "WindowedApp"
+else	
+	kind "ConsoleApp"
+end
+targetdir "bin"
+
+includedirs {"../src","Source", "Source/Tests"}
+
+links {
+	"BulletDynamics","BulletCollision", "LinearMath"
+}
+
+language "C++"
+
+files {
+	"Source/**.cpp",
+	"Source/**.h",
+}
+