* arts-2-1-714

* 3rdparty/disort1.2/ErrPack.f:

Rename ErrMsg to DSErrMsg to avoid conflict with function in REFICE.f.

* CMakeLists.txt, config.h.cmake: Check for f2c header.

* src/CMakeLists.txt: Disable test_disort if f2c.h is unavailable.

git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8563 aaf1aab0-4228-0410-ad68-8dceda47f409