[PATCH] [zorg] add llgo builder, osuosl config

[Galina]

Thanks for working on this, Andrew!

You may want to consider clean builds as well as incremental builds supported now.
In this case, you would need to support at least a 'clean' property and add a step to remove the llvm_objdir with all the content if the property is set (by using the doStepIf param). This is not a show stopper for this patch, though.


================
Comment at: zorg/buildbot/builders/LLGoBuilder.py:24
@@ +23,3 @@
+    f.addStep(buildbot.steps.shell.SetProperty(name="get_builddir",
+                                               command=["pwd"],
+                                               property="builddir",
----------------
You import from buildbot.steps.shell, why not import SetProperty there as well?


================
Comment at: zorg/buildbot/builders/LLGoBuilder.py:65
@@ +64,3 @@
+                               command=["ninja", "llgo"],
+                               haltOnFailure=True,
+                               description=["build llgo"],
----------------
Could you use NinjaCommand instead of direct invoking ShellCommand with "ninja" here and below, please?

http://reviews.llvm.org/D7989

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