fix release build with xcode
fix release build with xcode

* mordor: remove deprecated ZERO_LINK
* run_tests: turn off "-fvisibility=hidden -fvisibility-inlines-hidden"
  settings of run_tests to be consistent with mordor.
* run_tests: remove settings ARCH and MACOSX_DEPLOYMENT_TARGET and SDKROOT
  settings which are the same as upper level project settings, so we can
  just inherit them.

Change-Id: I923b451c77efba26d00ca58658b975723a70af34
Signed-off-by: Kefu Chai <a4b264ee037c625052534d60505bfd0db4776ac4@vmware.com>
Reviewed-on: https://gerrit.dechocorp.com/40460
Reviewed-by: Jenkins <49695b0f9c673fd73dab0ff3f84b5ced9302cc6a@mozy.com>
Reviewed-by: John Bowers <d7b9308ed434571742742576b893415f6b289a2d@vmware.com>

adfin/mordor,mozy/mordor,adfin/mordor,mozy/mordor,adfin/mordor,mtanski/mordor,mtanski/mordor,mtanski/mordor,mozy/mordor