Bug 29346: Use fully qualified names for C4:Circulation routines in C4::HoldsQueue

I suppose this is similar to circular dependency on other patch

HoldsQueue uses Circulation uses BatchUpdateBiblioHoldsQueueuse HoldsQueue

Without this the background job builds the queue, but reports failure:
Holds queue for biblio The Jacobite clans of the Great Glen, 1650-1784 /. An error occurred (Undefined subroutine &C4::HoldsQueue::GetTransfers called at /kohadevbox/koha/C4/HoldsQueue.pm line 351. )

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>

C4/HoldsQueue.pm

@@ -348,9 +348,9 @@ sub GetItemsAvailableToFillHoldRequestsForBib {
     $sth->execute(@params);
 
     my $itm = $sth->fetchall_arrayref({});
-    my @items = grep { ! scalar GetTransfers($_->{itemnumber}) } @$itm;
+    my @items = grep { ! scalar C4::Circulation::GetTransfers($_->{itemnumber}) } @$itm;
     return [ grep {
-        my $rule = GetBranchItemRule($_->{homebranch}, $_->{itype});
+        my $rule = C4::Circulation::GetBranchItemRule($_->{homebranch}, $_->{itype});
         $_->{holdallowed} = $rule->{holdallowed};
         $_->{hold_fulfillment_policy} = $rule->{hold_fulfillment_policy};
     } @items ];