* arts-2-1-844

* src/agenda_class.cc (Agenda::execute):

Add a note to the bad_alloc exception message that reducing the number
of threads might solve out of memory issues for large jobs. Suggested
by Jana.

git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8808 aaf1aab0-4228-0410-ad68-8dceda47f409