We only support DirectX 9...

If you have less than 11MB VRAM or need to use the ref implementation,
then you are using a dinosaur and have no business even attempting to play
this game.
Wow, those cards are old...

Remove detection for cards that are don't support at LEAST DirectX 8.
There's no way they would even be able to get past Direct3DCreate9, so we
shouldn't need to worry about them... I hope.
Lots of cleanups to hsG3DeviceDelector
Get rid of obsolete readers/writes for device info
Remove some unused PS version stuff
Remove some obviously obsolete caps
Better management of TnLEnums and Direct3D9 object

Two of the big nasties, according to profiling, are the TnL enum and
creation of Direct3D objects. It turned out we were doing these things
several times (3 and 4 respectively) during the init process. So, now we
have an hsGDirect3D namespace and some smart pointers to manage them!