made aSurface.surfaceDist_azimuth_from_pt return same distance for same arguments

turns out the test suite designs/paramSpaceIndex_equiDist_surface.js depended on a
parameterSpaceIndex that depended on a surface_sphere, while
designs/paramSpaceIndex_equiDist_surface.js otherwise depended on a surface_curvy_sphere
Hamonized precision configuration for Auchitect and test suite
to show that they behave equally. they do!
fuck