Re: [libvirt] [RFC 0/1] convert virStorageSource to GObject

I was hoping to quickly re-send the qemu_driver cleanups I've sent some time ago, now using Glib. I started by attempting to change the first VIR_AUTOUNREF() call in qemu_driver.c to g_autoptr(), which happens to be a virStorageSourcePtr type, then I realized that it wasn't that simple. Following up the instructions found on commit 16121a88a7, I started the conversion. Then 'make check' started to fail because some calls to virObjectRef/virObjectUnref were still remaining in the code, messing up stuff related with mirrorChain in qemu_blockjob.c. Turns out it was easier to burn through all the instances and change them to use GLib. This is being sent as RFC because x-I am aware that docs/hacking.html mentions that we shouldn't mix up certain GLib macros with Libvirt ones, thus I am uncertain of whether I have messed up or not. 'make check' works, did a few sanity checks with libvirtd as well. Hopefully this is somewhere near the mark. I intend to do such convertions from time to time, based on the cleanups I wanted to make in the qemu_driver file prior to the GLib introduction.