Subzero: Make thread_local work under MacOS 10.6.

Subzero: Make thread_local work under MacOS 10.6.

MacOS doesn't support the thread_local keyword until 10.7 or later, and our bots run 10.6.

Who knows whether Visual Studio supports it yet.

In the meantime, use the old-style syntax.

BUG= https://codereview.chromium.org/873443004/
R=jfb@chromium.org

Committed: https://gerrit.chromium.org/gerrit/gitweb?p=native_client/pnacl-subzero.git;a=commit;h=7d53825caab0e81c653de52833260dbe81963875

[Jim Stichnoth, 2015-01-23 18:05:53]

stichnot@chromium.org changed reviewers:
+ jfb@chromium.org, jvoung@chromium.org

[JF, 2015-01-23 18:17:55]

lgtm otherwise

https://codereview.chromium.org/865973006/diff/1/src/IceDefs.h
File src/IceDefs.h (right):

https://codereview.chromium.org/865973006/diff/1/src/IceDefs.h#newcode48
src/IceDefs.h:48: #endif // !_MSC_VER
SUBZERO_ATTRIBUTE_TLS

[Jim Stichnoth, 2015-01-23 18:22:30]

https://codereview.chromium.org/865973006/diff/1/src/IceDefs.h
File src/IceDefs.h (right):

https://codereview.chromium.org/865973006/diff/1/src/IceDefs.h#newcode48
src/IceDefs.h:48: #endif // !_MSC_VER
On 2015/01/23 18:17:55, JF wrote:
> SUBZERO_ATTRIBUTE_TLS

Done (using ICE_ATTRIBUTE_TLS instead).

[Jim Stichnoth, 2015-01-23 18:22:59]

Committed patchset #2 (id:20001) manually as
7d53825caab0e81c653de52833260dbe81963875 (presubmit successful).