commit 134384dd809f76d4b5d4af404e48d8064af1a963
author Dim Temp <dimtemp0@gmail.com> Wed Dec 03 22:06:46 2014 +0100
committer Johann <johannkoenig@google.com> Wed Dec 03 13:51:58 2014 -0800
tree 52dc8447c6d322c22572edf85b74a41acbc55ce0
parent 8f3db5f22e2f400f50f1ea050d17fe9bbbb272fe

Extend x32 check by also checking for __x86_64__.

Currently, the configure script checks for x32 by testing just the
__ILP32__ define.  However, on "plain" i386, __ILP32__ can also be
defined, for example by clang 3.5.0 and higher.  (That gcc does not
define it there, is another issue, but not for this tracker.)

Therefore, extend the check by also checking for __x86_64__, which will
also be defined for x32.

BUG=887

Change-Id: I90ac1d6843caff0416e1dd360c0be3dbaa85c2ae