exploration around connected line updates
use ast_channel_transfer_masquerade

So that the connected line information is properly updated on transfer.
refactor handling of AST_CONTROL_CONNECTED_LINE
remove unused code
reformat line
rename format_caller_id_* functions
use RAII_VAR in cb_ast_call
reformat in sccp_debug.c
Merge remote-tracking branch 'origin/4710-connected-line'