...which effectively is just a glorious wrapper around
comphelper::getProcessServiceFactory.

In turn gets also rid of ImplSVAppData's mxMSF and mpMSFTempFileName and the
rSMgr parameter to InitVCL.

All the VCL users "soffice", "spadmin", and "unopkg gui" appear to still work
fine.

Change-Id: I797d48f7d0d8c35bb82124c9ab0ee63850c4d863