RFC: Promote AArch64 to be built by default

[Tim Northover]

On Thu, Jan 31, 2013 at 5:58 PM, Justin Holewinski
<justin.holewinski at gmail.com> wrote:
> Just FYI:  the AArch64 tests fail on non-Linux platforms.  On my Mac, I get
> 75 failures running 'ninja check', since the tests do not specify a triple
> and defaults to Darwin, which the backend rejects in createTLOF.  I would
> expect the same behavior on Windows.

Thanks very much, Justin. I'll make sure to resolve these on OSX and
Windows before I flip the switch.

Tim.