Merged r3392 from trunk (0.9.2 update).
Update for 0.9.2 release.
Merged r3389 from trunk.
Translations updated to trunk r3388.
Korean support for PDF export (#4639).
Translation updates.
Merged r3379 from trunk.
Merged r3377 from trunk.
Backported r3368 from trunk.
Merged r3378 from trunk.