[Bug c/79635] Explain to translators what "asan" means

[roland.illig at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79635

--- Comment #2 from Roland Illig <roland.illig at gmx dot de> ---
Thanks for that info. Could you add this as a comment to the params.def file,
just above the first appearance of the word "asan"?