This patch adds a 'Templates' menu to the splash,
templates can be used to select an alternate startup.blend,
This works a little bit like presets do now, example directory layout (On Linux for eg would be in ~/.config/blender/2.74/).
- startup.blend (existing startup.blend)
(with the same functionality as startup.blend - so you don't accidentally overwrite it by saving).
You can also save new templates from the menu.