Goldilanes - 0.875x Hyperlane Density

So a lot of discussion I've seen post-2. 0 was about how default hyperlane density seemed to create too few chokepoints (except on certain galaxy shapes), while 0. 75x density seemed to create too many, and how it would be nice if Paradox created an option somewhere in between. Well, they haven't yet, but we can use the magic of modding and basic math to create a new default setting (since the actual galaxy gen code, and even the UI screen, appear to work with any positive density factor). This doesn't change the steps available in the UI (that doesn't seem to be possible with mods), so changing away from the default 0. 875 will mean you can't get back without hitting the Reset to Default button in the galaxy settings screen, but creating a galaxy with this new default does appear to produce the expected effect. Compatibility: overwrites the default map scenarios in map/setup_scenarios. I suspect it will break achievements. Otherwise it is really simple and shouldn't cause any other problems.