Re #7777. Remove full path to bl6_flux_at_sample file.

This leads to the one in the system tests repository being found and
will mean that the test will run on rhel6_tester.sns.gov
Re #7777. Try and fix attempt to write result log into /SNS/EQSANS.
Re #7777. Update reference results - very small changes.

These files relate to tests that have not been getting run (the input files
are not in the repo) and the results of the analysis have changed very slightly.
Merge remote branch 'origin/feature/7777_run_more_systemtests'