media: Add variant info API/XML

Add:

* ability to associate media to one or more variants of the OS in the
  'media' XML node. For example:

  <os id="http://microsoft.com/win/7">
    <short-id>win7</short-id>
    <name>Microsoft Windows 7</name>
    ..

    <variant id="starter">
      <name>Microsoft Windows 7 Starter</name>
    </variant>
    <variant id="home-basic">
      <name>Microsoft Windows 7 Home Basic</name>
    </variant>
    <variant id="home-premium">
      <name>Microsoft Windows 7 Home Premium</name>
    </variant>
    ..

    <media installer-reboots="2" arch="x86_64">
      <variant id="home-premium"/>
      <iso>
        ..
      </iso>
    </media>
  </os>

* API to query variants of the OS, media is associated with.

1 files changed, 7 insertions, 1 deletions

diff --git a/osinfo/osinfo_db.c b/osinfo/osinfo_db.c
index f19d9b4..db04033 100644
--- a/osinfo/osinfo_db.c
+++ b/osinfo/osinfo_db.c
@@ -627,6 +627,7 @@ static void fill_media (OsinfoDb *db, OsinfoMedia *media,
     const gchar *initrd_path;
     const gchar *arch;
     const gchar *url;
+    GList *variants, *node;
 
     languages = match_languages(db, media, matched_media);
     if (languages != NULL)
@@ -642,7 +643,12 @@ static void fill_media (OsinfoDb *db, OsinfoMedia *media,
     url = osinfo_media_get_url(matched_media);
     if (url != NULL)
         g_object_set(G_OBJECT(media), "url", url, NULL);
-
+    variants = osinfo_entity_get_param_value_list(OSINFO_ENTITY(matched_media),
+                                                  "variant");
+    for (node = variants; node != NULL; node = node->next)
+        osinfo_entity_add_param(OSINFO_ENTITY(media),
+                                "variant",
+                                (gchar *) node->data);
     kernel_path = osinfo_media_get_kernel_path(matched_media);
     if (kernel_path != NULL)
         g_object_set(G_OBJECT(media), "kernel_path", kernel_path, NULL);