Add a QXL graphics card type to domain XML schema

* src/qemu_conf.c: Add dummy entry in enumeration
* docs/schemas/domain.rng: Add 'qxl' as a type for the <video> tag
* src/domain_conf.c, src/domain_conf.h: Add QXL to video type
  enumerations

docs/formatdomain.html.in

@@ -1154,7 +1154,8 @@ qemu-kvm -net nic,model=? /dev/null
       <dt><code>model</code></dt>
       <dd>
         The <code>model</code> element has a mandatory <code>type</code>
-        attribute which takes the value "vga", "cirrus", "vmvga", "xen" or "vbox".
+        attribute which takes the value "vga", "cirrus", "vmvga", "qxl",
+	"xen" or "vbox", depending on the hypervisor features available.
         You can also provide the amount of video memory in kilobytes using
         <code>vram</code> and the number of screen with <code>heads</code>.
       </dd>

docs/schemas/domain.rng

@@ -1169,6 +1169,7 @@
               <value>vmvga</value>
               <value>xen</value>
               <value>vbox</value>
+              <value>qxl</value>
             </choice>
           </attribute>
           <optional>

src/conf/domain_conf.c

@@ -252,7 +252,8 @@ VIR_ENUM_IMPL(virDomainVideo, VIR_DOMAIN_VIDEO_TYPE_LAST,
               "cirrus",
               "vmvga",
               "xen",
-              "vbox")
+              "vbox",
+              "qxl")
 
 VIR_ENUM_IMPL(virDomainInput, VIR_DOMAIN_INPUT_TYPE_LAST,
               "mouse",

src/conf/domain_conf.h

@@ -482,6 +482,7 @@ enum virDomainVideoType {
     VIR_DOMAIN_VIDEO_TYPE_VMVGA,
     VIR_DOMAIN_VIDEO_TYPE_XEN,
     VIR_DOMAIN_VIDEO_TYPE_VBOX,
+    VIR_DOMAIN_VIDEO_TYPE_QXL,
 
     VIR_DOMAIN_VIDEO_TYPE_LAST
 };

src/qemu/qemu_conf.c

@@ -92,7 +92,8 @@ VIR_ENUM_IMPL(qemuVideo, VIR_DOMAIN_VIDEO_TYPE_LAST,
               "cirrus",
               "vmware",
               "", /* no arg needed for xen */
-              "" /* don't support vbox */);
+              "", /* don't support vbox */
+              "", /* Not implemented QXL yet */);
 
 int qemudLoadDriverConfig(struct qemud_driver *driver,
                           const char *filename) {