[libguestfs] Use ./configure --with-default-backend=.. instead of attach-method.

[Richard W.M. Jones]

commit 37139e9bd0e869ea79c6b5f86d9b67dfb74aaeda
Author: Richard W.M. Jones <rjones at redhat.com>
Date:   Tue Apr 2 14:33:27 2013 +0100

    Use ./configure --with-default-backend=.. instead of attach-method.

 libguestfs.spec |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libguestfs.spec b/libguestfs.spec
index b4e5e94..7b6a829 100644
--- a/libguestfs.spec
+++ b/libguestfs.spec
@@ -704,7 +704,7 @@ EOF
 fi
 
 %{configure} \
-  --with-default-attach-method=libvirt \
+  --with-default-backend=libvirt \
   --with-extra="fedora=%{fedora},release=%{release},libvirt" \
   --with-qemu="qemu-kvm qemu-system-%{_build_arch} qemu" \
   --enable-install-daemon \