libbpf-tools: Add verbose option to bindsnoop
libbpf-tools: Add verbose option to bindsnoop

Support verbose mode and set custom libbpf print callback
in bindsnoop.

Signed-off-by: Hengqi Chen <2146682b4c3fe4aa97c809745b7d5be9e6165e06@outlook.com>

brendangregg/bcc,iovisor/bcc,brendangregg/bcc,iovisor/bcc,iovisor/bcc,brendangregg/bcc,brendangregg/bcc,brendangregg/bcc,iovisor/bcc,iovisor/bcc