[patch, fortran] Handling of .and. and .or. expressions

[Thomas Koenig]

Hi Dominique,

> Point taken! However will you warn for
> 
> -1<=x .and. x<=1
> x>0.0 .and. y>0.0
> … ?

> If yes, this will be an incredible noise. If no, what about
> 
> -1<=x .and. x<=1 .and. asin(x)<1.0
> x>0.0 .and. y>0.0 .and. log(x+y)<0.0

The patch can be extended, sure. I do not want to catch
all possible problems on the first try :-)

Regards

	Thomas