[Patch, Fortran] Follow-up to used-before-typed patch

[Tobias Burnus]

Hi Daniel,

Daniel Kraft wrote:
> this is a follow-up to my used-before-typed patch addressing the 
> problem with indexing.  While implementing, I realized that I could in 
> fact reuse gfc_traverse_expr and rewrote the logic to do that; this 
> gets the index thing right and makes the code hopefully cleaner.
>
> No regressions on GNU/Linux-x86-32 (to 99% sure, test is still running).

Daniel Kraft wrote:
> So I then propose to rename it as gfc_matching_prefix and move it to 
> match.h, in addition to the gfc_traverse_expr patch sent.  What do you 
> think about this?
>
> BTW, regression test finished indeed without failures, but not much a 
> surprise... 

OK for the trunk with the obligatory changelog. Thanks!

Tobias