Related: #i125226# expect DDE servers to be already up

"soffice" is always up anyway and other DDE apps should be started manually

(cherry picked from commit e0bfdb26cef87c8d3b3435293116a33cf99c11f0)

Conflicts:
	sfx2/source/appl/impldde.cxx

Change-Id: I52ebb26528952a4abf33ac95cb67c598f08b2790
(cherry picked from commit f4a8d7cd10cda57143b22519e16cdf8d5f19e759)
Reviewed-on: https://gerrit.libreoffice.org/10288
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>
Tested-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>