I really don't know how this could break things with light, but wanted to
let it be an option so we can try turning it off to fix some light bug reports
Also fixes build as a result of an upstream force push
--- work/Bukkit
Submodule work/Bukkit 217dc08d..d13fdf8c:
> SPIGOT-4637: Add source block to BlockPhysicsEvent.
--- work/CraftBukkit
Submodule work/CraftBukkit acbba8ba..cb98c6ea:
> Fix line endings in CraftDefaultPermissions
> SPIGOT-4637: Add source block to BlockPhysicsEvent.
--- work/Spigot
Submodule work/Spigot 75ee78a0c...4165cd8f4 (commits not present)
> (Manually Added) - Appears to be a result of an upstream force push
> (Manually Added) - Changed: SPIGOT-4636: Add creative mode NBT permissions
