PATCH: [perl #76424] revised: document existing \x \000 behavior

Here is a revised patch based on people's feedback.

I think it is a waste of time to worry too much about the wording of the 
\000 part, as I'm close to submitting patches that clean up a number of 
the problems, and so the wording is in flux anyway.

• PATCH: [perl #76424] revised: document existing \x \000 behavior by karl williamson
• Re: PATCH: [perl #76424] revised: document existing \x \000 behavior by David Golden
• Re: PATCH: [perl #76424] revised: document existing \x \000 behavior by karl williamson
• Re: PATCH: [perl #76424] revised: document existing \x \000behavior by Aristotle Pagaltzis
• Re: PATCH: [perl #76424] revised: document existing \x \000 behavior by karl williamson
• Re: PATCH: [perl #76424] revised: document existing \x \000 behavior by Eric Brine
• Re: PATCH: [perl #76424] revised: document existing \x \000 behavior by David Golden