There are (at least) three RFCs, all non-obsolete, purporting to guard
the formatting of multipart/form-data filename parameters, and they
all disagree: RFC 6266, RFC 7578 and RFC 8187. There is also
considerable implementation divergence.
So, to not have to hard-code any one of the different strategies, add
Options controlling the formatting.
Found to be required in implementation review.
Task-number: QTBUG-125985
Change-Id: Ibc82ff8a3460580ee70eafcaf9b88de36751940d
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
Reviewed-by: Mate Barany <mate.barany@qt.io>
(cherry picked from commit 49ab4f156b7d1a0593f25680d0b841d2dc4c348e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
678c839575