Bug 913070 - Move TelemetryPing to a jsm. r=Yoric, r=glandium

--HG--
rename : toolkit/components/telemetry/TelemetryPing.js => toolkit/components/telemetry/TelemetryPing.jsm
Bug 952543 - Record add-on manager start up exceptions in Telemetry. r=mossop
Bug 952997 - Fix OS.File large file support. r=Yoric