Update TelecommManager per API requirements. (3/3)

+ Add constants GATEWAY_PROVIDER_PACKAGE and GATEWAY_ORIGINAL_ADDRESS
- Remove those corresponding constants from private packages
+ Modify clearAccounts() so it no longer takes an argument.

Bug: 17329632
Change-Id: Ia5241a9161bef5479fcc2d6665eeb105b8397022
2 files changed