qemu: Move QEMU log reading into a separate function
qemu: Move QEMU log reading into a separate function

https://bugzilla.redhat.com/show_bug.cgi?id=954248

(cherry picked from commit e4bdba8d7f86d2b0ea224b64e336b36ef52f6276)

Conflicts:
	src/qemu/qemu_process.c - the VIR_ERROR line is not in RHEL

mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2,mithleshvrts/libvirt-0.10.2