For LibreOfficeKit we need to start up the event loop, and can't continue
initialisation until all the related (VCL etc.) setup is complete -- the
OfficeIPCThread is also enabled as one of the last items, and can be
used to indicate whether or not we can start actually working with VCL.

Change-Id: I0450b65584ddf6e8d02ce0c6e66e06f47841d1b7