exception_receiver in i386.md

[John Wehle]

> Did you actually observe that the PIC register was getting corrupted
> without this exception_receiver?

No.  I was going strictly on the documentation in md.texi and discussions
with Jeffrey Law and Jason Merrill.

-- John
-------------------------------------------------------------------------
|   Feith Systems  |   Voice: 1-215-646-8000  |  Email: john@feith.com  |
|    John Wehle    |     Fax: 1-215-540-5495  |                         |
-------------------------------------------------------------------------