SYSTEM_VERSION_PREFIX is defined inconsistently (if at all) across Version.xcconfig files during iOS builds.
<rdar://problem/15926359>
Created attachment 226818 [details] Patch v1
Comment on attachment 226818 [details] Patch v1 Clearing flags on attachment: 226818 Committed r165685: <http://trac.webkit.org/changeset/165685>
All reviewed patches have been landed. Closing bug.