add openbox/autostart
xinitrc, xprofile, openbox: try to reduce the mess

Sometimes I startx Openbox, sometimes I try out a different WM...
compton should technically be in openbox-autostart, but it works well
with twm and stuff too; on the other hand, I probably shouldn't start it
for standalone compositing WMs (e.g. e17). And notify-osd depends on a
compositor, but conflicts with e.g. awesome (although I do not use it).

Bleh. This needs more `systemd`, less old crap (I really don't know why
I start twm sometimes), and more `systemd`.
xprofile: add a debug message for the keyring

...which should be working fine in 3.9
xinitrc: do not run dbus this late

xprofile runs some stuff that autostarts DBus, so this ran it a second time
xinitrc, xprofile: start DBus earlier

Decisions, decisions...