[Bug translation/89915] clean up and canonicalize wording in params.def

[roland.illig at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89915

--- Comment #2 from Roland Illig <roland.illig at gmx dot de> ---
(In reply to Andrew Pinski from comment #1)
> params should be considered as internal options

When I read the above, I first thought: Yay, less strings for me to translate.
Just exclude them from gcc.pot.

But then I remembered that "internal compiler errors" have also made their way
into gcc.pot. I don't see any benefit in translating internal errors, therefore
I have requested to remove these internal errors from the translation; see bug
80055. Nothing has happened on this topic in the last 2 years.

Therefore I guess this "internal" means the same as in "internal compiler
error", and that everything internal should still be translated.

There's a decision to make: either the internal stuff is really considered
internal, in which case no translation is necessary and the text quality
doesn't matter as well. Or, the word "internal" as used by the GCC project
actually means "publicly visible" and therefore needs high-quality text.