[Patch] Enable Hollerith constant and character array in format tag

[Paul Thomas]

Feng Wang,

>
>This program reminds me that it is not easy to deal with array section. See a
>two dimentsions array program:
>
>character*6 c (3,3)
>
I wonder if we should allow this?

I have perused the standard: 9.2.2.1.  The only constraint on the array 
is that it should not have vector subscripts.

>I once thought about scalarizing the statement like "c(2:,2:) = 'world'". But
>it is more complex and I don't think it is a good method.
>
>  
>
I propose that we pass the array descriptor rather than the address. 
 That way, the library can handle the array appropriately.  I will 
contemplate a clean way of doing this that minimises the library 
modifications.

>And I will not have time on gfortran this and next month. It's a pity not to
>contribute more. Sigh.
>
>  
>
Often, breaks from this kind of work are refreshing and one is more 
productive afterwards.

Have a good summer.

Paul T