Merge pull request swiftlang#75 from graydon/run-cperf-debugging-sep-29

[run_cperf] Add debugging output and adjust stats dirs

Author: graydon

run_cperf

@@ -98,6 +98,8 @@ def main():
             args.output.close()
             shutil.copyfile(o, p)
 
+    common.check_execute(['find', workspace, '-ls'])
+
     return regressions
 
 
@@ -217,7 +219,7 @@ def get_stats_dir(instance, variant):
 
 
 def get_actual_config_and_flags(config, stats):
-    flags = ("-stats-output-dir '%s'" % stats)
+    flags = ("-stats-output-dir %s" % stats)
     # Handle as a pseudo-configs
     if config == 'wmo-onone':
         flags += ' -wmo -Onone '