Fixes from Win32 build.
Fix potentially-transparent lights in default shader
vsFontRenderer only snaps (by default) in 2D font contexts

Can still be enabled explicitly for 3D contexts, or disabled for 2D
ones.
Win32 vectorstorm notes required DLLs.

Allows games to package them, if desired.
Vectors use initialisation lists in constructors.

(How was I not already doing this?)