xid dropped in favour of application_id

Change-Id: Id1eb43aa9c8dfb4eac82f99eff0f84c5320e0da0
Reviewed-on: https://gerrit.libreoffice.org/47661Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

Change-Id: I37a610acbce78033f90b7d18274eb233a734fd7e

UNOIDL identifiers starting with a lowercase letter and containing underscores
are reserved for the implementation.  It would be good to be able to enforce
that in code parsing UNOIDL files, but some existing identifiers violate that.
So at least change any violating method parameter identifiers here.  While that
is theoretically an incompatible change for published interfaces, it practically
does not matter at all.

Change-Id: I5eff17b5dd5e2e92984184127c4fe1712d62c9dd

...since GStreamer is not an Apple product it should not be
called iGStreamer.

Change-Id: Ia2b73ecb56dd7aee88b23b560430ffe94b455665

Change-Id: Iefbe31af8d6ec421c6006423b6ee3a6375e3d453

Change-Id: Ie6cf3cc8e672ad9499c55bda7c29b50140c6a57a

 - partial implementation of the SessionInstaller interfaces
 - accessable via service:
   org.freedesktop.PackageKit.SyncDbusSessionHelper

Change-Id: Ica91f481d041a066215fba3e808bf587e1271f1b