[Author: thomasvl]
[Author: thomasvl]

Change the guards for the atomic ops, this seems to make all the iPhone SDKS that come with 3.1.3 happy.  Will test 3.2 after landing this.

TBR=dmaclach

git-svn-id: 741c308154f1e22deafec9707230e8b816ec4ca6@327 7dc7ac4e-7543-0410-b95c-c1676fc8e2a3

chao787/GTM-mirror,chao787/GTM-mirror,chao787/GTM-mirror