add lib/bsearch function
add GPL'ed lib/sort function [to be removed]
add sample function [to be squashed]
add rule-symmap.mk
change rule %.bin to %.elf.bin
add bin-list as prerequisites of %.bin
add CONFIG_SYMMAP
read configurations from include/config.h and revise symmap targets
sampling: syntax tweak and make static to internal functions
sampling: conditional build for KDB
sort: rewrite by using routines taken from FreeBSD
sampling: make internal function static
mk: trivial indent for commands
sampling: output format tweaks