Script Drawing Improvements.

[ZoriaRPG]

I'd just do int bitdepth on CreateBitmap(). In theory, a user could make 32b bitmaps, do alpha stuff, and render them back as 8-bit. Might make interesting effects. Might look dreadful, but Allegroshould auto downsample 32b to 8b when rendering it via a release. then we can add all those 32b only modes that you wanted.

I also noticed that in CreateBitmap, you added static sizes of min =1 max = 2048. Care to explain?why not just allocate whatever the user wishes, up to zscript numbering limitations? Won't this also conflict with the other preddefined constraints too?

I'll go over it al in more detail, and patch in the functions. If you thought Polygon was big, BitmapEx is bigger. I'd alllso sugest DrawBitmapFx() (as in 'effects'). I think that's more on the money than Ex (Experimental, or Extended?)

I'll see if I can connect all the dots and make a text file on adding functions. We absolutely need this, including for adding setter/getter stuff.