Intel: Replace deprecated Fortran flag -nofor_main with -nofor-main
The -nofor_main
flag was originally added by commit ccdd3e94. Since
then, Intel Fortran renamed the option to -nofor-main
and deprecated
the old name. The new name has been available for a long time, so
we can just switch to it.
Fixes: #21735 (closed)
Backport: release
Edited by Brad King