String disambiguation for slugs (in upgrade.php)

[RanYanivHartstein]

The localized strings for the default slugs for categories and link categories can clash with their names when localizing to a language that can't be used in URLs.

For e.g., when localizing to Hebrew, the default category name would be localized to the Hebrew equivalent of "Uncategorized", but the default slug should remain "uncategorized", since Hebrew can't be properly used in URLs. Therefor, I recommend adding comments to the slug strings, so they can have different localizations:

$cat_slug = sanitize_title(_c('Uncategorized|Slug for default category'));

and

$cat_slug = sanitize_title(_c('Blogroll|Slug for default link category'));

(in wp-admin/includes/upgrade.php)

[nbachiyski]

RanYanivHartstein, preparing a patch is always better than just pasting the new code in the ticket description. I know you know how to create a patch, just reminding :-)

[ryan]

(In [7628]) Disambiguate default slugs. Props RanYanivHartstein. fixes #6614 for trunk

[ryan]

(In [7629]) Disambiguate default slugs. Props RanYanivHartstein. fixes #6614 for 2.5