Reviewed by Gustavo Noronha.

        Fix up erroneus 'Since: @version@' tags in documentation.

        * webkit/webkitwebdatasource.cpp:
        * webkit/webkitwebresource.cpp:
        (webkit_web_resource_class_init):
        * webkit/webkitwebsettings.cpp:
        (webkit_web_settings_class_init):
        * webkit/webkitwebview.cpp:
        (webkit_web_view_class_init):
        * webkit/webkitwebwindowfeatures.cpp:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@48173 268f45cc-cd09-0410-ab3c-d52691b4dbfc