Roll tools/swarming_client/ to 94aea8c60c5f294e4540c2da03e5190138b0ed38.

$ git log e6677c870..94aea8c60 --date=short --format='%ad %ae %s' | sed 's/@chromium\.org//'
2015-02-05 maruel Lower parallelism to 8 threads on 32 bits system.

TBR=vadimsh@chromium.org
BUG=419862

Review URL: https://codereview.chromium.org/901283004

Cr-Commit-Position: refs/heads/master@{#315029}

DEPS

@@ -54,7 +54,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
-  'swarming_revision': 'e6677c8702f2735dbd4fc24aad388346a6bbb342',
+  'swarming_revision': '94aea8c60c5f294e4540c2da03e5190138b0ed38',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.