New option --reset-indent to reset indentation to 0 at the begining o…

[meteokid]

New option --reset-indent to reset indentation to 0 at the beginning of a file if it matches program/module/sub/func

$ cat test.F90
     subroutine a()
     do i=1,4
     print *,i
     enddo
     end subroutine

$ fprettify.py -s --strict-indent -- test.F90
     subroutine a()
        do i = 1, 4
           print *, i
        enddo
     end subroutine

$ fprettify.py -s --strict-indent --reset-indent -- test.F90
subroutine a()
   do i = 1, 4
      print *, i
   enddo
end subroutine

[pseewald]

Do you think there is a use case for matching subroutine and function? If we can remove these, the behaviour for module and program can be made default and we don't even need the --strict-indent option.