Merge changes from topic "NS-A44_lingerstate"
* changes:
[NS B10] Cleanup : remove mRematchedNetworks
[NS B09] Create NetworkRanker
[NS B08] More simplification
[NS B07] More simplification
[NS B06] Simplification
[NS B05] Remove old dead code
[NS B04] Make the network selection request-major.
[NS B03] Add debug log showing the reassignment
[NS B02] Split out a function to apply a NetworkReassignment
[NS B01] Move the computation loop to a separate function
[NS A44 2/2] Apply requests after all networks rematching is computed
[NS A44 1/2] Update linger state before processing listens