work on chan_lcr: bridging works, interface selection possible

work on chan_lcr: bridging works, interface selection possible

	modified:   Makefile
	modified:   apppbx.cpp
	modified:   apppbx.h
	modified:   bchannel.c
	modified:   bchannel.h
	modified:   chan_lcr.c
	modified:   chan_lcr.h
	modified:   dss1.cpp
	modified:   genext.c
	modified:   joinremote.cpp
	modified:   joinremote.h
	modified:   mISDN.cpp
	modified:   mISDN.h
	modified:   macro.h
	modified:   main.c
	modified:   message.h
	modified:   options.c
	modified:   options.h
	modified:   socket_server.c