Add svn:executable to a bunch of scripts in BuildSlaveSupport. Also removed the empty mac directory.
Add svn:executable to a bunch of scripts in BuildSlaveSupport.
Also removed the empty mac directory.

* BuildSlaveSupport/built-product-archive: Added property svn:executable.
* BuildSlaveSupport/download-built-product: Added property svn:executable.
* BuildSlaveSupport/mac: Removed.
* BuildSlaveSupport/test-result-archive: Added property svn:executable.


git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@138889 bbb929c8-8fbe-4397-9dbb-9b2b20218538
axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk