Reviewed by Gustavo Noronha Silva.

        [Gtk] Creation of a WebkitWebView widget is very slow
        https://bugs.webkit.org/show_bug.cgi?id=30032

        * WebCoreSupport/EditorClientGtk.cpp:
        (WebKit::EditorClient::ignoreWordInSpellDocument): Change 'langs' to 'dicts'
        to reflect the fact that the list just holds Enchant dictionaries now.
        (WebKit::EditorClient::learnWord): Ditto.
        (WebKit::EditorClient::checkSpellingOfString): Ditto.
        (WebKit::EditorClient::getGuessesForWord): Ditto.
        * webkit/webkitprivate.h: Remove the now unused SpellLanguage struct.
        * webkit/webkitwebsettings.cpp: Change function call to reflect new
        webkit_web_settings_get_enchant_dicts name.
        (get_enchant_broker): Add this method which returns the enchant broker singleton.
        (free_spell_checking_language): The list contents have changed, so change
        the way each element is freed.
        (webkit_web_settings_finalize): Change to reflect 'spell_checking_languages_list'
        to 'enchant_dicts' member name change.
        (webkit_web_settings_set_property): Use the broker singleton here instead of making
        a new one for each language. The Enchant dictionary is now the list payload.
        (webkit_web_settings_copy): More name-change updates.
        (webkit_web_settings_get_enchant_dicts): Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@55222 268f45cc-cd09-0410-ab3c-d52691b4dbfc