Add support for Intel Xeon Phi

```
A patch to allow aparapi to execution on Intel Xeon Phi. 

Use with

-Dcom.amd.aparapi.executionMode=ACC

```

Original issue reported on code.google.com by `ekas...@gmail.com` on 25 Sep 2014 at 12:19

Attachments:
- [aparapi-phi-154-1700.patch](https://storage.googleapis.com/google-code-attachments/aparapi/issue-154/comment-0/aparapi-phi-154-1700.patch)
