Mark string as not containing printf specifiers
A string containing %b
was considered a C format string
which made it impossible for translations to change the order
of the date specifiers.
This marks it as no-c-format.
Previously discussed in Infrastructure/damned-lies#461 (closed), but after a gettext 0.22 bug was fixed it looks like some strings containing %b still needs tagging.
Edited by Anders Jonsson