trivial: back the requirement on appstream-glib to 0.6.9

The items that 0.6.13 requires are now guarded by a version test.
This should allow running fwupd master on more distros that haven't
yet picked up appstream-glib 0.6.13.

meson.build

@@ -125,7 +125,7 @@ if polkit.version() >= '0.114'
   conf.set('HAVE_POLKIT_0_114', '1')
 endif
 gudev = dependency('gudev-1.0')
-appstream_glib = dependency('appstream-glib', version : '>= 0.6.13')
+appstream_glib = dependency('appstream-glib', version : '>= 0.6.9')
 gusb = dependency('gusb', version : '>= 0.2.9')
 sqlite = dependency('sqlite3')
 libarchive = dependency('libarchive')

src/fu-engine.c

@@ -2195,6 +2195,7 @@ fu_engine_plugin_set_coldplug_delay_cb (FuPlugin *plugin, guint duration, FuEngi
 		 duration, self->coldplug_delay);
 }
 
+#if AS_CHECK_VERSION(0,6,13)
 static gboolean
 fu_engine_load_hwids (FuEngine *self, GError **error)
 {
@@ -2229,6 +2230,7 @@ fu_engine_load_hwids (FuEngine *self, GError **error)
 
 	return TRUE;
 }
+#endif
 
 static gboolean
 fu_engine_load_plugins (FuEngine *self, GError **error)
@@ -2388,11 +2390,13 @@ fu_engine_load (FuEngine *self, GError **error)
 		return FALSE;
 	}
 
+#if AS_CHECK_VERSION(0,6,13)
 	/* load the hwids */
 	if (!fu_engine_load_hwids (self, error)) {
 		g_prefix_error (error, "Failed to load hwids: ");
 		return FALSE;
 	}
+#endif
 
 	/* delete old data files */
 	if (!fu_engine_cleanup_state (error)) {

src/fu-self-test.c

@@ -21,6 +21,7 @@
 
 #include "config.h"
 
+#include <appstream-glib.h>
 #include <fwupd.h>
 #include <glib-object.h>
 #include <glib/gstdio.h>
@@ -33,6 +34,7 @@
 #include "fu-hwids.h"
 #include "fu-test.h"
 
+#if AS_CHECK_VERSION(0,6,13)
 static void
 fu_hwids_func (void)
 {
@@ -93,6 +95,7 @@ fu_hwids_func (void)
 		g_assert_cmpstr (guid, ==, guids[i].value);
 	}
 }
+#endif
 
 static void
 _plugin_status_changed_cb (FuPlugin *plugin, FwupdStatus status, gpointer user_data)
@@ -422,7 +425,9 @@ main (int argc, char **argv)
 	g_assert_cmpint (g_mkdir_with_parents ("/tmp/fwupd-self-test/var/lib/fwupd", 0755), ==, 0);
 
 	/* tests go here */
+#if AS_CHECK_VERSION(0,6,13)
 	g_test_add_func ("/fwupd/hwids", fu_hwids_func);
+#endif
 	g_test_add_func ("/fwupd/pending", fu_pending_func);
 	g_test_add_func ("/fwupd/plugin{delay}", fu_plugin_delay_func);
 	g_test_add_func ("/fwupd/plugin{module}", fu_plugin_module_func);

src/fu-util.c

@@ -1635,12 +1635,14 @@ main (int argc, char *argv[])
 		     /* TRANSLATORS: command description */
 		     _("Get all devices that support firmware updates"),
 		     fu_util_get_devices);
+#if AS_CHECK_VERSION(0,6,13)
 	fu_util_add (priv->cmd_array,
 		     "hwids",
 		     NULL,
 		     /* TRANSLATORS: command description */
 		     _("Return all the hardware IDs for the machine"),
 		     fu_util_hwids);
+#endif
 	fu_util_add (priv->cmd_array,
 		     "install-prepared",
 		     NULL,