Don't fatal when encountering ...
Instead, detect when the parse failed and bail out.
- Put [[ http://good.com#u:email@example.com/ | broken ]] into a Remarkup document without backticks.
- Before patch: fatal ("rejecting ambiguous URI").
- After patch: link doesn't work (which is correct), but page does.
Reviewed By: chad
Maniphest Tasks: T12796
Differential Revision: https://secure.phabricator.com/D18076