Tests with ifort #54
Description
In an ideal world we would run CI tests with other compilers, and ifort would be the obvious one (as that's still well used). I should look at that.
One problem will be that new(ish) iforts add "abort:" at the end of tests which abort. We could work around this for gortran by doing BUILD_SCRIPT="FC='gfortran -fno-backtrace' ./configure && ... (see d2ad441). The ifort version, BUILD_SCRIPT="FC='ifort -notraceback' ./configure && leaves the "abort:" in place. At least for 17.0.1 on ARC3.