Sippts

- sipscan.pl: using threads are now optional (-noth)

- Bug fixes

- Don't save data into database bt default

- New script (sipdigestleak.pl) to exploit the vulnerability discovered by
Sandro Gauci that affects a large number of hardware and software devices

- Bug fixes

- Bug fixes
- Change --nodb by --db (by default don't save session)
- Now it is possible to change the user-agent