- Use socket activation to get dbus up before starting emacs

- Fix emacs.sh wrapper script to check modern dbus session (boo#1032759)

- Update to emacs version 25.2 a bugfix release
* 'find-library', 'help-function-def' and 'help-variable-def' now run
'find-function-after-hook'.
* New basic face 'fixed-pitch-serif', for a fixed-width font with serifs.
The 'Info-quoted' and 'tex-verbatim' faces inherit from it by default.
* New variable 'use-default-font-for-symbols', for backward compatibility.
This variable allows you to get back pre-Emacs 25 behavior where the
font for displaying symbol and punctuation characters was always
selected according to your fontset setup. By default, Emacs 25 tries
to use the default face's font for such characters, if it supports
them, disregarding the fontsets. Set this variable to nil to disable
this and get back the old behavior.
* 'electric-quote-mode' is no longer suppressed in a buffer whose
coding system cannot represent curved quote characters.
Instead, users can deal with the unrepresentable characters in the
usual way when they save the buffer.
* New variable 'inhibit-compacting-font-caches'.
Set this variable to a non-nil value to speed up display of characters
using large fonts, at the price of a larger memory footprint.
* The version number of CC Mode has been changed from 5.33 to
5.32.99, although the software itself hasn't changed. This aims to
reduce confusion with the standalone CC Mode 5.33 (available from
http://cc-mode.sourceforge.net), which is a more mature version than
the one included in Emacs 25.2.