rebuffer option for chan_lcr (160 bytes per frame)

l1-link state "unknown" if not known yet.

removed root user check.

	modified:   bchannel.c
	modified:   bchannel.h
	modified:   chan_lcr.c
	modified:   chan_lcr.h
	modified:   dss1.cpp
	modified:   lcradmin.c
	modified:   mISDN.cpp
	modified:   main.c