* arts-2-1-537

* cmake/modules/ArtsTestcases.cmake:

Raise the report level for test cases from -r002 to -r022.
Then one can see useful information on the screen when manually
running testcases with, e. g. 'ctest -V -R fast.faraday'

* src/messages.h:

(sufficient_priority_agenda): Move the in_main_agenda check into here.

(sufficient_priority): New method. Returns true if current output
priority is sufficient for either screen or file.

(ArtsOut::operator<<): Remove in_main_agenda check.

* src/absorption.cc (calc_gamma_and_deltaf_artscat4):

Correct output value to vmrs[this_species]+broad_spec_vmr_sum in
warning.

Use out2.sufficient_priority().

* src/arts.h: Add convenience macro DEBUG_COUNTER(n). This will create
a static variable and output the name of the counter and its value
everytime that code is reached.

git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8270 aaf1aab0-4228-0410-ad68-8dceda47f409