There is built-in multilingual support with OJS 2.2, but it operates a little differently than what was in 2.1. When the Journal Manager has enabled more than one language for the journal site (this can be done from the Journal Manager's User Home, under Languages), users will be able to switch the form language whenever they encounter a form that accepts information in more than one language.
For example, when an author is submitting an article in OJS 2.2, they will have the option to switch to French on Step 2 of the submission process. This option appears as the "Form Language" option at the very top of the page. The author can fill in whatever information they have in English (if available), then switch to French and do the same thing. Once they save the page, the information they entered will be seen depending on the system language chosen by the viewer (this can be chosen on the right-hand navigation bar).
This behaviour holds true throughout the journal -- so, for example, when the Journal Manager is completing or updating the 5-step Setup process, they will be able to enter information in multiple languages by switching the "Form Language".