New cyli, cylo and ring primitives.

[Travis Cobbs]

I created these primitives with the purpose to avoid the rotation of the corresponding ones. I hope they can be approved. If not, I send an email to the PT Admin for deletions.

I will say right now that I'm not going to support these in LDView's primitive substitution. As such, the only way that I feel they would be acceptable is if they are shortcuts to the existing cyli and cylo primitives. Furthermore, they appear to be rotated 135 degrees, not 45 degrees.