more license/copyright header updates (thanks Ian!)

apps/app_alarmreceiver.c

apps/app_curl.c

apps/app_cut.c

apps/app_dictate.c

apps/app_eval.c

apps/app_exec.c

apps/app_festival.c

apps/app_forkcdr.c

apps/app_hasnewvoicemail.c

apps/app_queue.c

apps/app_random.c

apps/app_rpt.c

apps/app_sayunixtime.c

apps/app_userevent.c

apps/app_verbose.c

cdr/cdr_manager.c

cdr/cdr_pgsql.c

cdr/cdr_tds.c

channels/chan_h323.c

dsp.c