run.sh add a --loop option so it runs the test in a loop

[dshmgh]

I made a new verion of run.sh that adds an option --loop so that the test can be run in a loop. For those systems which show NOT VULNERABLE, the test should be run perhaps 100 to 1000 times to really verify no vulnerability. I have some Intel P4 processors that only show VULNERABLE once in 200 to once in 2000 runs and the test string of "%s version %s" is only partially correct. My assumption is that the exploit is unlikely to succeed on those processors.

I'm somewhat new to github, should I attach my run_loop.sh here?

[paboldin]

@dshmgh yes, please attach it. Upload it there https://gist.github.com/ and provide a link here.

[dshmgh]

OK, I've uploaded the file:
https://gist.github.com/dshmgh/10721f544585c4d2e2725324e1df6d80

The --loop option is optional, without it runs as before but always exits with
exit $vuln