suzerain: #3090 prefer edge99 to edge

For everything save Re_delta (which is defined with dH \approx 0),
move to using edge99 and not edge.  This will ease comparison
with other sources of information and behave more like
folks expect.

git-svn-id: https://svn.ices.utexas.edu/repos/pecos/suzerain/trunk@44498 0bd85f0b-c151-43b9-a1e9-27231104551f