Roll tools/swarming_client/ to 14b5fd823e2a3f0ac702ae297c8315f55820914c.

$ git log e7d8b9884..14b5fd823 --date=short --format='%ad %ae %s' | sed 's/@chromium\.org//'
2014-09-08 maruel Fix regression introduced in 8bee66d7dd682dcf14387c2650c39ba447d221c6.
2014-09-08 maruel Switch swarming.py query to use /swarming/api/v1/client/bots.
2014-09-08 maruel Axe multiple commands in isolate.py to focus it on its core, plus others.
2014-09-04 vadimsh Moving fetch logic to isolateserver.py, part 2.
2014-09-02 vadimsh Moving fetch logic to isolateserver.py, part 1.
2014-09-02 maruel Add spam.py to test large logs.
2014-08-28 maruel Move functions to load&save .isolated from isolateserver into isolated_format
2014-08-28 maruel Continue the refactor to move .isolated logic into isolated_format.py.
2014-08-28 maruel Continue the migration to isolated_format.py.
2014-08-28 maruel Create isolate_format.IsolateError.
2014-08-28 maruel Start migrating .isolated handling code into isolated_format.py.

R=vadimsh@chromium.org
BUG=

Review URL: https://codereview.chromium.org/549373002

Cr-Commit-Position: refs/heads/master@{#293889}

DEPS

@@ -47,7 +47,7 @@ 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': 'e7d8b988423ff1966d64db3ef7ca766296f9b0c1',
+  'swarming_revision': '14b5fd823e2a3f0ac702ae297c8315f55820914c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.