[PATCH] [zorg] Clean up libcxx-libcxxabi-singlethreaded-x86_64-linux-debian so that it passes the feature flags to lit

[Jon Roelofs]

r217265

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Comment at: zorg/buildbot/builders/LibcxxAndAbiBuilder.py:70
@@ +69,3 @@
+    if additional_features:
+        litTestArgs = "--param=additional_features=" +
+                      ",".join(additional_features)
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danalbert wrote:
> else this is undefined and then used below.
Goood point! Untested code is untested...

http://reviews.llvm.org/D5215