Request permission to MFC stacksize changes

[Daniel Eischen]

> Now that all three threading libraries have had their stacksizes
> increased, I'd like permission to request re for MFC approval so that
> these changes get into 5.4-RELEASE.  Additionally, I'd like to MFC the
> libc_r changes back into RELENG_4.  I'd be happy to do all the leg work
> on this if you guys give permission.  Thanks.

OK by me.

-- 
DE