add an option, let the systemtap doesn't check whether the probe point is at the start of an assembly instruction

[Timo Juhani Lindfors]

peng yu <yupeng0921@gmail.com> writes:
> Below is a patch, I test it on the systemtap-1.8, after apply the
> patch, we can use a '-i' option when call stap command, let the
> systemtap don't do the address valid check.

As a user it sounds bit dangerous to use a short option for something
like this.