spec: drop anything older than Fedora 13

RHEL 5 is based on libvirt 0.8.2, as was Fedora 13.  RHEL 5 also
happens to be the oldest box that we actively support with a
buildbot, so it is time to clean up some crufty conditionals in
the spec file that no longer are necessary for modern Fedora.

Although it is probably okay to make further simplifications to
a newer minimum Fedora version, that can be done as a later patch.
This patch just focuses on cleaning any comparison of %{?fedora}
that will always be true or false once we assume a minimum of F13.

* libvirt.spec.in: Make with_audit default to on. Move other
conditionals to a single RHEL-5 block. Simplify any fedora
comparison older than 13.  Document our assumptions.
Signed-off-by: NEric Blake <eblake@redhat.com>

libvirt.spec.in

 # -*- rpm-spec -*-
 
+# This spec file assumes you are building for Fedora 13 or newer,
+# or for RHEL 5 or newer. It may need some tweaks for other distros.
 # If neither fedora nor rhel was defined, try to guess them from %{dist}
 %if !0%{?rhel} && !0%{?fedora}
 %{expand:%(echo "%{?dist}" | \
@@ -139,7 +141,6 @@
 %define with_libpcap       0%{!?_without_libpcap:0}
 %define with_macvtap       0%{!?_without_macvtap:0}
 %define with_libnl         0%{!?_without_libnl:0}
-%define with_audit         0%{!?_without_audit:0}
 %define with_dtrace        0%{!?_without_dtrace:0}
 %define with_cgconfig      0%{!?_without_cgconfig:0}
 %define with_sanlock       0%{!?_without_sanlock:0}
@@ -153,6 +154,7 @@
 
 # Non-server/HV driver defaults which are always enabled
 %define with_sasl          0%{!?_without_sasl:1}
+%define with_audit         0%{!?_without_audit:1}
 
 
 # Finally set the OS / architecture specific special cases
@@ -223,31 +225,21 @@
     %define with_libxl 0
 %endif
 
-# PolicyKit was introduced in Fedora 8 / RHEL-6 or newer
-%if 0%{?fedora} >= 8 || 0%{?rhel} >= 6
-    %define with_polkit    0%{!?_without_polkit:1}
-%endif
-
-# libcapng is used to manage capabilities in Fedora 12 / RHEL-6 or newer
-%if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
-    %define with_capng     0%{!?_without_capng:1}
-%endif
-
 # fuse is used to provide virtualized /proc for LXC
 %if 0%{?fedora} >= 17 || 0%{?rhel} >= 7
     %define with_fuse      0%{!?_without_fuse:1}
 %endif
 
-# netcf is used to manage network interfaces in Fedora 12 / RHEL-6 or newer
-%if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
-    %define with_netcf     0%{!?_without_netcf:%{server_drivers}}
-%endif
-
-# udev is used to manage host devices in Fedora 12 / RHEL-6 or newer
-%if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
-    %define with_udev     0%{!?_without_udev:%{server_drivers}}
-%else
+# RHEL 5 lacks newer tools
+%if 0%{?rhel} == 5
     %define with_hal       0%{!?_without_hal:%{server_drivers}}
+%else
+    %define with_polkit    0%{!?_without_polkit:1}
+    %define with_capng     0%{!?_without_capng:1}
+    %define with_netcf     0%{!?_without_netcf:%{server_drivers}}
+    %define with_udev      0%{!?_without_udev:%{server_drivers}}
+    %define with_yajl      0%{!?_without_yajl:%{server_drivers}}
+    %define with_dtrace 1
 %endif
 
 # interface requires netcf
@@ -255,11 +247,6 @@
     %define with_interface     0
 %endif
 
-# Enable yajl library for JSON mode with QEMU
-%if 0%{?fedora} >= 13 || 0%{?rhel} >= 6
-    %define with_yajl     0%{!?_without_yajl:%{server_drivers}}
-%endif
-
 # Enable sanlock library for lock management with QEMU
 # Sanlock is available only on arches where kvm is available for RHEL
 %if 0%{?fedora} >= 16
@@ -320,16 +307,8 @@
     %define with_libnl 1
 %endif
 
-%if 0%{?fedora} >= 11 || 0%{?rhel} >= 5
-    %define with_audit    0%{!?_without_audit:1}
-%endif
-
-%if 0%{?fedora} >= 13 || 0%{?rhel} >= 6
-    %define with_dtrace 1
-%endif
-
 # Pull in cgroups config system
-%if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+%if 0%{?fedora} || 0%{?rhel} >= 6
     %if %{with_qemu} || %{with_lxc}
         %define with_cgconfig 0%{!?_without_cgconfig:1}
     %endif
@@ -349,7 +328,7 @@
 
 
 # Force QEMU to run as non-root
-%if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+%if 0%{?fedora} || 0%{?rhel} >= 6
     %define qemu_user  qemu
     %define qemu_group  qemu
 %else
@@ -473,7 +452,7 @@ BuildRequires: libattr-devel
 # For pool-build probing for existing pools
 BuildRequires: libblkid-devel >= 2.17
 %endif
-%if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+%if 0%{?fedora} || 0%{?rhel} >= 6
 # for augparse, optionally used in testing
 BuildRequires: augeas
 %endif
@@ -538,7 +517,7 @@ BuildRequires: cyrus-sasl-devel
     %if 0%{?fedora} >= 20 || 0%{?rhel} >= 7
 BuildRequires: polkit-devel >= 0.112
     %else
-        %if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+        %if 0%{?fedora} || 0%{?rhel} >= 6
 BuildRequires: polkit-devel >= 0.93
         %else
 BuildRequires: PolicyKit-devel >= 0.6
@@ -621,7 +600,7 @@ BuildRequires: netcf-devel >= 0.1.4
     %endif
 %endif
 %if %{with_esx}
-    %if 0%{?fedora} >= 9 || 0%{?rhel} >= 6
+    %if 0%{?fedora} || 0%{?rhel} >= 6
 BuildRequires: libcurl-devel
     %else
 BuildRequires: curl-devel
@@ -705,7 +684,7 @@ Requires: avahi-libs
         %if 0%{?fedora} >= 20 || 0%{?rhel} >= 7
 Requires: polkit >= 0.112
         %else
-            %if 0%{?fedora} >= 12 || 0%{?rhel} >=6
+            %if 0%{?fedora} || 0%{?rhel} >=6
 Requires: polkit >= 0.93
             %else
 Requires: PolicyKit >= 0.6
@@ -865,7 +844,7 @@ Requires: nfs-utils
 # For mkfs
 Requires: util-linux
 # For glusterfs
-                %if 0%{?fedora} >= 11
+                %if 0%{?fedora}
 Requires: glusterfs-client >= 2.0.1
                 %endif
             %endif
@@ -1579,7 +1558,7 @@ mv $RPM_BUILD_ROOT%{_datadir}/systemtap/tapset/libvirt_qemu_probes.stp \
     %endif
 %endif
 
-%if 0%{?fedora} < 14 && 0%{?rhel} < 6
+%if 0%{?rhel} == 5
 rm -f $RPM_BUILD_ROOT%{_prefix}/lib/sysctl.d/libvirtd.conf
 %endif
 
@@ -1607,7 +1586,7 @@ fi
     %if ! %{with_driver_modules}
         %if %{with_qemu}
 %pre daemon
-            %if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+            %if 0%{?fedora} || 0%{?rhel} >= 6
 # We want soft static allocation of well-known ids, as disk images
 # are commonly shared across NFS mounts by id rather than name; see
 # https://fedoraproject.org/wiki/Packaging:UsersAndGroups
@@ -1776,7 +1755,7 @@ fi
     %if %{with_driver_modules}
         %if %{with_qemu}
 %pre daemon-driver-qemu
-            %if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+            %if 0%{?fedora} || 0%{?rhel} >= 6
 # We want soft static allocation of well-known ids, as disk images
 # are commonly shared across NFS mounts by id rather than name; see
 # https://fedoraproject.org/wiki/Packaging:UsersAndGroups
@@ -1884,7 +1863,7 @@ exit 0
 %config(noreplace) %{_sysconfdir}/sysconfig/virtlockd
 %config(noreplace) %{_sysconfdir}/libvirt/libvirtd.conf
 %config(noreplace) %{_sysconfdir}/libvirt/virtlockd.conf
-    %if 0%{?fedora} >= 14 || 0%{?rhel} >= 6
+    %if 0%{?fedora} || 0%{?rhel} >= 6
 %config(noreplace) %{_prefix}/lib/sysctl.d/libvirtd.conf
     %endif
 
@@ -1912,7 +1891,7 @@ exit 0
     %endif
 
     %if %{with_polkit}
-        %if 0%{?fedora} >= 12 || 0%{?rhel} >= 6
+        %if 0%{?fedora} || 0%{?rhel} >= 6
 %{_datadir}/polkit-1/actions/org.libvirt.unix.policy
 %{_datadir}/polkit-1/actions/org.libvirt.api.policy
         %else