rt_regionfix was treating the inability to open a region fix file as an error worthy of direct printing to stderr. However this condition didn't invalidate the rt_i and the calling function (rt_prep_parallel) remained blissfully unaware.
After this fix rt_regionfix calls bu_log instead of perror. This permits error reporting on the user's terms: if the log is to be saved to file, then so be it; if the log is to be ignored, then so be it; etc.
rt_regionfix was treating the inability to open a region fix file as an error worthy of direct printing to stderr. However this condition didn't invalidate the rt_i and the calling function (rt_prep_parallel) remained blissfully unaware.
After this fix rt_regionfix calls bu_log instead of perror. This permits error reporting on the user's terms: if the log is to be saved to file, then so be it; if the log is to be ignored, then so be it; etc.
fixes #101