When building rpms for newer Fedora or RHEL, take advantage of the
newer netcf packaging to guarantee interface snapshot support.
* libvirt.spec.in (BuildRequires): Bump minimum version on
platforms that support netcf 0.1.8.
BuildRequires: libssh2-devel
%endif
%if %{with_netcf}
+%if 0%{?fedora} >= 16 || 0%{?rhel} >= 6
+BuildRequires: netcf-devel >= 0.1.8
+%else
BuildRequires: netcf-devel >= 0.1.4
%endif
+%endif
%if %{with_esx}
%if 0%{?fedora} >= 9 || 0%{?rhel} >= 6
BuildRequires: libcurl-devel