Fix starting X with startx (from xinit) and sddm (with consolekit2 and upowerd) and somwhat related fixes

[Fernando de Oliveira]

We have investigated the functioning of X when started at runlevel 3 with startx and xinit, from xinit-1.3.4 and from runlevel 5, with sddm-0.12.0.

Results are dependent on the vt (tty) where X will be executed, on the use of Consolekit2 and session d-bus. results were double checked by Bruce and Fernando.

Some tests failed in different forms, depending on the Desktop Environment. They have been performed with LXDE and LXQt by Fernando. Tests with XFce have been double checked by Bruce and Fernando.

Failing the right combination of commands to start X, several problems arises:

• Administrative tasks such as mount/umount file systems from file managers fail to authenticate.
• Some session exit options either disappear, or do not function at all or malfunction.
• X fails to start.

Independent results similar to ours have been obtained by Ken.

Due to those problems, we need to modify several instructions from packages and parts of the referred DE's.

At the moment, I recall:

1. xinit-1.3.4
2. sddm-0.12.0 (including bootscript)
3. ConsoleKit2-1.0.0
4. LXDE
5. LXQt
6. Xfce
7. KDE4

This ticket description may be improved with the collaboration of Ken, who has been discussing with us most topics here for many weeks in the -dev list and the collaboration of Bruce, who has been intensively exchanging information with me, privately.

Tomorrow, will increase detail, but please, you two can put the hands on at any time.

[Fernando de Oliveira]

First attempt, at r16461.

Forgot to update bootscripts version. Doing in minutes.

Anyway, leaving open, I think there will be still sicussions and modifications.

Bruce, Ken, please see if I forgot anything.

[Fernando de Oliveira]

Bootscripts version fixed at r16462.

[Fernando de Oliveira]

KDE4 was included after Bruce tested it.

I am doing some modifications, cleanups, trying better English and fixing some errors I included yesterday.

[Fernando de Oliveira]

Fix starting X with startx or sddm ... Part 2 at r16464.

[Fernando de Oliveira]

Still not checked by Bruce, but we combined that I could close.

Part 3 fixed at r16469.