[evolution-data-server] Hard-code freeze break request

[Milan Crha <mcrha redhat com>]

        Hello,
I would like to ask for a hard-code freeze break for
evolution-data-server due to [1], where is reported that a migration of
data can fail when the GConf is configured to conform to XDG folder
settings. The attached patch at [1] is pretty simple, it only checks
whether the XDG folder exists, and if yes, then it uses it for account
migration, otherwise the default folder as before is used.

I believe it will be good to have it included in 3.12.0.
        Thanks and bye,
        Milan

[1] https://bugzilla.gnome.org/show_bug.cgi?id=726681