Update Valgrind suppressions for bug 793548 and bug 823782. DONTBUILD

--HG--
extra : rebase_source : 933131ab806fdbd77ecebebd84ff94e68909def1
Merge the last PGO-green inbound changeset to m-c.
Bug 822712 - SimplePush - Interface. r=dougt, sr=sicking
Bug 822712 - SimplePush - Implementation. r=dougt, jst, jlebar
Bug 822712 - SimplePush - UDP Wakeup feature. r=jst, jlebar
Bug 822712 - SimplePush - Add PushManager to the test_interfaces.html test. r=dougt
Merge m-c to inbound.