Current bugfix.
Support for 1D LRSplineSurface.

Lifting the 1D surface to 3D by adding parameter domain as X and Y coordinates.
Fixing bugs related to projection of curves.

Cleaned up the usage of unspecified "tol" variables. When derived from
a geometric tolerance and used as a parametric tolerance, we now
calculate a more suitable parametric tolerance using the global size
of the surface in the corresponding parameter directions.
Merge branch 'proj_cv_fix'