Rename the test for coordinate conversions.
Add degrees/radians conversion factors.

These already exist in the dms class, but I don't think that they
really belong there. Various engine code should probably be avoiding
that class, and there's no reason to use dms just for that conversion
factor.
Add radian versions of spherical -- quaternion conversions.
Add a better test for the quaternion -- spherical conversion
Use plain vectors for points, in a sane way.
Add a quaternion-based conversion from B1950 to Galatic coordinates.
Change the conversion tool to use quaternions.

It's very funky and doesn't always give the correct answer,
but as far as I can tell this is a FOUNDBUG, in the tool,
not with my code, which passes unit tests.

CCMAIL: akarshsimha@gmail.com
Rename the ConvertCoord namespace to Convert.