Add test for fixing problematic objects in fit_in_steps.  It appears that the fit might be getting nans in the first pass of the p(z) and there were no points in the curve that satisfied p/max(p) > 1.e-5.  Now just do a test and abort with a warning if a problem is found.
Add test for fixing problematic objects in fit_in_steps.  It appears that the fit might be getting nans in the first pass of the p(z) and there were no points in the curve that satisfied p/max(p) > 1.e-5.  Now just do a test and abort with a warning if a problem is found.

git-svn-id: b93d21f79df1f7407664ec6e512ac344bf52ef2a@746 f9184c78-529c-4a83-b317-4cf1064cc5e0

gbrammer/unicorn,gbrammer/pygrism,gbrammer/unicorn,gbrammer/pygrism