freerds: fix session-manager monolithic build
xorg-server: automate fetching and building of xorg-server sources
freeds: stub CEF module
freerds: make modules dynamically loaded
freerds: add finding and linking to CEF
xrdp-ng: fix building with non-automated xorg-server sources
Merge remote-tracking branch 'MartinHaimberger/Devel' into module integration

Conflicts:
	session-manager/CMakeLists.txt
	session-manager/module/X11/x11_module.c
icp: use defined call type instead of constatn
use enum instead of constants
session-manager/icp: server side ping call added
common/call: refactored call names
call ping: fixed file headers
call ischannelallowed: fixed include header
icp: added stup for GetUserSession call
sm: added call for GetUserSession
sm modules: fixed naming
some fixes