Comment 1 for bug 1384491

TinyMCE 4.1 comes with a new spellchecker plugin, which no longer supports aspell. Instead, it uses the PHP enchant or pspell libraries (which do not ship standard with Ubuntu). This probably won't impact most of our users, because a couple of releases ago we turned off the TinyMCE spellchecker by default, since there are in-browser spellcheckers these days.

Nonetheless, in order to suppert the new spellchecker, I've dropped the old $CFG->pathtoaspell config option, and added a new $CFG->tinymcespellcheckerengine option, to indicate whether they want to use enchant or pspell. (Or leave it empty to use neither.)