Update/modernize Voodoo pipeline rasterizer

[andrew-gardner]

Code in devices/video/voodoo.* is the last user of the legacy polygon rasterizing code as well as at least one other legacy MAME construct. A restructuring of the code will make the voodoo emulation more portable and relieve MAME of 2 or more legacy implementations.

[angelosa]

Not sure about the legacy rasterizer part nowadays, there are definitely far too many anonymous enumerators and macros declared, and at very least each implementation should have its own dedicated I/O space with progressive inheritance.