application doc update

ChangeLog

apps/app_adsiprog.c

apps/app_authenticate.c

apps/app_chanisavail.c

apps/app_controlplayback.c

apps/app_curl.c

apps/app_cut.c

apps/app_datetime.c

apps/app_db.c

apps/app_dial.c

apps/app_directory.c

apps/app_disa.c

apps/app_dumpchan.c

apps/app_echo.c

apps/app_enumlookup.c

apps/app_flash.c

apps/app_getcpeid.c

apps/app_groupcount.c

apps/app_ices.c

apps/app_image.c