Merge branch 'immediate-removal' into GLSL-master

Conflicts:
	Source/Core/VideoCommon/Src/PixelShaderGen.cpp
	Source/Plugins/Plugin_VideoSoftware/Src/SWRenderer.cpp

immediate-removal is a new created branch seperated from master but reverted the revert of immediate-removal
so we get less conflicts by merging

Source/Core/VideoCommon/Src/VertexShaderGen.cpp

@@ -542,6 +542,7 @@ const char *GenerateVertexShaderCode(u32 components, API_TYPE ApiType)
 
 	//write the true depth value, if the game uses depth textures pixel shaders will override with the correct values
 	//if not early z culling will improve speed
+	// TODO: Can probably be dropped?
 	if (is_d3d)
 	{
 		WRITE(p, "o.pos.z = " I_DEPTHPARAMS".x * o.pos.w + o.pos.z * " I_DEPTHPARAMS".y;\n");