IMS: SRVCC related fixes.

1. SRVCC: Fix only one call seen on UI after multi-call SRVCC

    When SRVCC for more than one call happens, the original connection
    is overwritten by the last handover connection for all the
    connections before SRVCC. As a result the connection of second
    call overwrites all the connections after handover

    Change-Id: I449d3cea8d8e430db63ef2af21b3447d1b718e0e

2. Add support for using the state of connection before handover

    Pick the correct connection to replace the original connection
    using the state of handover connection before handover

    Change-Id: I22bf5f4e72dd835ae857ab65423d6601abe454c8

Bug: 18559588
Change-Id: Iac25e07a271cd157c7bf061f1329ff347b867727
1 file changed