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/findOpenCL.lua

@@ -0,0 +1,84 @@
+	-- todo: add Apple OpenCL environment vars
+
+	function findOpenCL_AMD()
+		local amdopenclpath = os.getenv("AMDAPPSDKROOT")
+		if (amdopenclpath) then
+			return true
+		end
+		return false
+	end
+
+	function findOpenCL_NVIDIA()
+		local nvidiaopenclpath = os.getenv("CUDA_PATH")
+		if (nvidiaopenclpath) then
+			return true
+		end
+		return false
+	end
+
+	function findOpenCL_Intel()
+		local intelopenclpath = os.getenv("INTELOCLSDKROOT")
+		if (intelopenclpath) then
+			return true
+		end
+		return false
+	end
+			
+	function initOpenCL_AMD()
+		configuration {}
+		local amdopenclpath = os.getenv("AMDAPPSDKROOT")
+		if (amdopenclpath) then
+			defines { "ADL_ENABLE_CL" , "CL_PLATFORM_AMD"}
+			includedirs {
+				"$(AMDAPPSDKROOT)/include"				
+			}
+			configuration "x32"
+				libdirs {"$(AMDAPPSDKROOT)/lib/x86"}
+			configuration "x64"
+				libdirs {"$(AMDAPPSDKROOT)/lib/x86_64"}
+			configuration {}
+			links {"OpenCL"}
+			return true
+		end
+		return false
+	end
+
+
+	function initOpenCL_NVIDIA()
+		configuration {}
+		local nvidiaopenclpath = os.getenv("CUDA_PATH")
+		if (nvidiaopenclpath) then
+			defines { "ADL_ENABLE_CL" , "CL_PLATFORM_NVIDIA"}
+			includedirs {
+				"$(CUDA_PATH)/include"				
+			}
+			configuration "x32"
+				libdirs {"$(CUDA_PATH)/lib/Win32"}
+			configuration "x64"
+				libdirs {"$(CUDA_PATH)/lib/x64"}
+			configuration {}
+			links {"OpenCL"}
+			return true
+		end
+		return false
+	end
+
+	function initOpenCL_Intel()
+		configuration {}
+		local intelopenclpath = os.getenv("INTELOCLSDKROOT")
+		if (intelopenclpath) then
+			defines { "ADL_ENABLE_CL" , "CL_PLATFORM_INTEL"}
+			includedirs {
+				"$(INTELOCLSDKROOT)/include"				
+			}
+			configuration "x32"
+				libdirs {"$(INTELOCLSDKROOT)/lib/x86"}
+			configuration "x64"
+				libdirs {"$(INTELOCLSDKROOT)/lib/x64"}
+			configuration {}
+			links {"OpenCL"}
+			return true
+		end
+		return false
+	end
+