Add configuration panel for audio record module

sflphone-gtk/src/audioconf.c

sflphone-gtk/src/configwindow.c

sflphone-gtk/src/dbus.c

sflphone-gtk/src/dbus.h

src/call.cpp

src/call.h

src/managerimpl.cpp

src/plug-in/audiorecorder/audiorecord.cpp

src/plug-in/audiorecorder/audiorecord.h

src/voiplink.h