Added gfortran equivalents of pgf90's -Mfixed, -Mfree, -Mextend, -Mstandard, -Munlimited and also added -fdefault-double-8
Timezones are not helping here - I need to clock off for the day. I think revision 1 + revision 2 are correct when combined.
I am happy for you to push the combination of revision 1 and revision 2. I'll approve it on that basis.
Extended the flang driver options to include gfortran equivalents to pgf90 specific options.
- Added gfortran equivalents of pgf90's -Mfixed, -Mfree, -Mextend, -Mstandard, -Munlimited
- Also added -fdefault-double-8
- Added in a switch to pass through the correct OpenMP-enabling flag depending on if F18_FC=pgf90 or =gfortran