Revert "(Glide64) Coords precalculated now - grDrawVertexArrayContiguous no longer"

This reverts commit f3485f95fab86c37411945e1a78587aa305e2483.
Revert "(Glide64/Glitch64) Precalculate u0/v0/v1/v2 coords for vertices in Glide64"

This reverts commit b55afc2a7a41611bb7e233123d2307b5fd87bda1.
Revert "(Glitch64) Do ConvertCoordsKeep inside grDrawVertexArrayContiguous"

This reverts commit c3e703df809d77390bb867197cec6adb1f70195f.
Revert "(Glide64) Use ConvertCoordsKeep instead of ConvertCoordsConvert"

This reverts commit 4d4dd450907f494f8ebdf5cd761d28b02013e5a3.

Conflicts:
	glide2gl/src/Glide64/rdp.h