change table histogram digits output format

make it print pretty less than 80 chars.

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@gmail.com>
support printf("%p", funcaddr)

This will output symbol with no offset

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@gmail.com>
delete doc/TODO file

Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@gmail.com>