libvirt_private.syms: Correctly export seclabel APIs
libvirt_private.syms: Correctly export seclabel APIs

https://bugzilla.redhat.com/show_bug.cgi?id=923946

One of my previous patches manipulated virSecurityLabel* APIs,
some were added to header files, and some were renamed. However,
these changes were not reflected in libvirt_private.syms.
(cherry picked from commit a919e6f7769b27168b9217fd2fd5143259f63173)

Conflicts:
	src/libvirt_private.syms: a8c8685e and 27cf98e2 are not backported yet

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