policycoreutils: fixfiles: label /root but not /var/lib/BackupPC

This patch removes /root from the excluded dirs.

This also adds /var/lib/BackupPC to list of directories to ignore
labeling.  Mainly because this directory tends to be Huge and causes a
huge spike in the amount of time it takes to relabel.  Especially if
there is a relabel caused by a policy update.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Dan Walsh <dwalsh@redhat.com>

policycoreutils/scripts/fixfiles

@@ -103,7 +103,7 @@ exclude_dirs_from_relabelling() {
 
 exclude_dirs() {
     exclude=
-    for i in /home /root /tmp /dev; do
+    for i in /var/lib/BackupPC /home /tmp /dev; do
         [ -e $i ]  && exclude="$exclude -e $i";
     done
     exclude="$exclude `exclude_dirs_from_relabelling`"