libvirt: Update to 4.6.0

Fixes builds against glibc >= 2.28

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/patches/libvirt/0002-Change-options-in-libvirtd.conf-for-IPFire.patch

@@ -4,15 +4,10 @@ Date: Mon, 6 Jun 2016 19:40:50 +0200
 Subject: [PATCH 2/2] Change options in libvirtd.conf for IPFire
 
 Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org>
----
- daemon/libvirtd.conf | 6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
 
-diff --git a/daemon/libvirtd.conf b/daemon/libvirtd.conf
-index ac06cdd..1a41914 100644
---- a/daemon/libvirtd.conf
-+++ b/daemon/libvirtd.conf
-@@ -87,14 +87,14 @@
+--- a/src/remote/libvirtd.conf~	2018-10-24 09:12:31.045030419 +0100
++++ b/src/remote/libvirtd.conf	2018-10-24 09:12:33.443109098 +0100
+@@ -82,14 +82,14 @@
  # without becoming root.
  #
  # This is restricted to 'root' by default.
@@ -29,7 +24,7 @@ index ac06cdd..1a41914 100644
  
  # Set the UNIX socket permissions for the R/W socket. This is used
  # for full management of VMs
-@@ -104,7 +104,7 @@
+@@ -99,7 +99,7 @@
  #
  # If not using PolicyKit and setting group ownership for access
  # control, then you may want to relax this too.
@@ -38,6 +33,3 @@ index ac06cdd..1a41914 100644
  
  # Set the UNIX socket permissions for the admin interface socket.
  #
--- 
-2.1.4
-