Feature request: Update catalogs with fuzzy matching, but don't add fuzzy flags

[jeanas]

Suppose I find a typo in a message. If I correct it, the next update of PO files will update this msgid, and mark the entry as fuzzy because the translation is outdated. However, if the typo in English does not map to a typo in other languages, I know that these translations are still correct. In that case, I'd like to be able to update the PO files skipping the addition of #,fuzzy flags.