Bug 1020108: use DOMTimestamp in MozCellBroadcastMessage. r=gene
rename nsICellBroadcastProvider.idl to nsICellBroadcastService.idl
Bug 864484 - 1/N: rename CellBroadcastProvider to CellBroadcastService.
Bug 864484 - 2/N: remove nsICellBroadcastListener.
Bug 864484 - 3/N: add CellBroadcastModule and creation factory.
Bug 864484 - 4/N: build CellBroadcast by default.