[Bug fortran/89103] Allow blank format items in format strings

[mark.eggleston at codethink dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89103

--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45556
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45556&action=edit
Change Log for gc/testsuite for patch