Adding b-spline single-crease patch basis

[manuelk]

Add a basis for CPU evaluation of single-crease patches (b-splines). Do we need Bezier too ?

[takahito-tejima]

Thanks Manuel! those changes look great. Currently we are finalizing release preparations, so we'll soon process them. sorry for taking time

[manuelk]

No worries : just putting trying to pave the way forward. I am on hold until Barry pushes his refactors to patch tables, since i will want to integrate those into the characteristic map factories.

[barfowl]

Manuel, the major work planned to the PatchTables (at least for this release) should now be in place. There will be some minor changes coming from David and myself to improve and enable the new features (face-varying and inf-sharp patches), but nothing major.

[jtran56]

Filed as internal issue #151987.