[PATCH] Add remote testing support to the lit config.

[Dan Albert]

LGTM with the one nit.

Thanks a lot for taking care of this. Should greatly simplify my test setup.


================
Comment at: libcxx/test/config.py:125
@@ +124,3 @@
+        if te:
+            self.lit_config.note("inferred executor as: %r" % exec_str)
+            if self.lit_config.useValgrind:
----------------
This isn't inferred, this is explicit. The else path is inferred.

http://reviews.llvm.org/D7380

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