[CMake] Fortran to C mapping module

[Bill Hoffman]

George Neill wrote:
> Bill,
> 
> On Mon, Oct 27, 2008 at 8:46 PM, Bill Hoffman <bill.hoffman at kitware.com> wrote:
>> I have just checked in a module to help with the linking of Fortran from C.
>>   I would appreciate some feedback, and perhaps some testing with different
>> Fortran compilers.  Does anyone know of a web site that lists different
>> Fortran compiler name mangling schemes?
> 
> Not sure if this will help you much, but,
> http://en.wikipedia.org/wiki/Name_mangling#Name_mangling_in_Fortran
> speaks of a few.
> 
I had most of that covered, but did not know this:

already containing an underscore ("FOO_BAR") has two underscores 
appended ("foo_bar__"),

That is a tricky one, I will add a check for.

Thanks.

-Bill