Su class with test to get root access

This project absolutely will need root access. It uses the su binary which
should be present on every rooted device. The requirement results out of
the need to add iptable rules to the Linux kernel.
Expect su runs if any of the threads is alive
Same scheme for log tag of threads; Fix a comment
Swap parameters for test: failIn(time, reason)
Read kernel messages using: cat /proc/kmsg

Firewall rule 'iptables -j LOG' while print messages about IP pakets that
matches the rule. It will be used as last rule before a paket gets dropped
by the kernel.