add lfsr_test.c, lfsr.c, and lfsr.h
add lfsr_test.c, lfsr.c, and lfsr.h

each/bind9-collab,pecharmin/bind9,each/bind9-collab,each/bind9-collab,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,pecharmin/bind9,pecharmin/bind9,each/bind9-collab,pecharmin/bind9