This indicates to the UI that the hangup command has been received by the
Telephony layer and passed down to the RIL, but we have not yet been notified
of a successful DISCONNECT.
Addresses http://b/issue?id=1659876.
The changes from 090602 update frameworks/base to support 3way calling
and call waiting.
The changes from 090603 completed the CdmaInformationRecords class
but the original changes submitted has been simplified, toString added
and a bug fixed where the notifications where not being handled properly.
The changes from 090605 added Prl Version, apn fixes.
