[Patch, fortran] Documentation for GFORTRAN_UNBUFFERED_* environment variables

[Jerry DeLisle]

Janne Blomqvist wrote:
> Hi,
> 
> the attached patch adds documentation for the GFORTRAN_UNBUFFERED_n 
> environment variables, and corrects the documentation for 
> GFORTRAN_UNBUFFERED_ALL environment variable (it applies to input as 
> well as output, and potential performance issues are not for large I/O 
> but rather doing lots of small sequential I/O).
> 
> Ok for trunk?
> 

This is OK, thanks.

Jerry