[PATCH] MinGW toolchain

[Yaron Keren]

  Martell, To submit an updated patch:

  * Click *Differential*.
  * Click *Create Revision*.
  * Paste the updated diff.
  * Select the review you want to from the *Attach To* dropdown and click
    *Continue*.
  * Click *Save*.

  I marked the revision as editable by all users so I hope this will work. If you don't see D3240 in the attach to list then it's possible that only the author can submit the new diff. I didn't find answer to this on
  https://secure.phabricator.com/book/phabricator/
  nor do I see a way to add or change author.

  In this case, either open a new revision and link to this one and I'll close it or email me the diff and I'll submit it.

http://reviews.llvm.org/D3420