Merge "Fixes to include signal.h"

addons/chan_ooh323.h

apps/app_dahdiras.c

apps/app_dial.c

apps/app_queue.c

channels/chan_console.c

channels/chan_dahdi.c

channels/chan_iax2.c

channels/chan_mgcp.c

channels/chan_motif.c

channels/chan_sip.c

channels/chan_skinny.c

main/cli.c

main/features.c

main/http.c

main/tcptls.c

pbx/pbx_dundi.c

res/res_musiconhold.c