virtlockd: fix socket path

Change the socket path to match the one used by lockd driver.

https://bugzilla.redhat.com/show_bug.cgi?id=968128
(cherry picked from commit 70fe129546545f9683ce57e6946dd80a08b54d2b)
libvirt_private.syms: add virProcessGetStartTime

https://bugzilla.redhat.com/show_bug.cgi?id=973543
(cherry picked from commit cbb3b71d3f537ead2b3081a06abd12292d0ceef3)
qemu: Avoid leaking uri in qemuMigrationPrepareDirect

(cherry picked from commit ddf8ad82eb5f638d6153f4b1869af17dca572e67)
nodedev: fix vport detection for FC HBA

Use the host number as the host number when constructing the sysfs path
instead of the variable we are trying to fill.

https://bugzilla.redhat.com/show_bug.cgi?id=973543
(cherry picked from commit 371c15517c919e9d7d2ea3f66e490bd49b6db384)