[llvm][polly]update for ScopStmt iterator name change

[Tobias Grosser]

On 19/06/2014 18:11, Yabin Hu wrote:
> Hi Tobias,
>
> Here attached patch fixes bugs because of ScopStmt iterator name change from
>
> ScopStmt::memacc_iterator to ScopStmt::iterator.

Please make this a C++11 range based loop. Otherwise this change is 
trivial. Please commit.

Tobias