[RM-5073] Lenstool do not produce image.all in some cases

Created on 2018-12-13 22:53:12 by Guillaume Mahler. % Done: 0

When doing a source or image prediction like :

runmode
reference 3 3.586259 -30.400174
source 1 tmp_img_guess.dat
end

if tmp_img_guess.dat is not the file that was used to have the constraints AND bayes.dat is in the directory THEN lenstool will put an error message like:
COMP: dist.dat file ERROR: number of sources in lenstool (4) and found in bayes.dat mismatch

and it will not produce a file image.all

This feature does not appear if bayes.dat is not in the directory.

What it means is you cannot make predictions if you have a bayes.dat that you forgot to remove.
I provide a working example below.