Change 1.3.6 occurrences to 2.0.0 to follow version bump

Version was bumped but documentation (and comments) didn't follow the
numbering.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

docs/formatdomain.html.in

@@ -2574,7 +2574,7 @@
             if <code>discard</code> is set to "ignore").  NB enabling the
             detection is a compute intensive operation, but can save file
             space and/or time on slow media.
-            <span class='since'>Since 1.3.6</span>
+            <span class='since'>Since 2.0.0</span>
           </li>
           <li>
             The optional <code>iothread</code> attribute assigns the
@@ -5372,7 +5372,7 @@ qemu-kvm -net nic,model=? /dev/null
           of the first forward dev will be used.
         </p>
       </dd>
-      <dt><code>socket</code> <span class="since">since 1.3.6 (QEMU only)</span></dt>
+      <dt><code>socket</code> <span class="since">since 2.0.0 (QEMU only)</span></dt>
       <dd>
         <p>
           This listen type tells a graphics server to listen on unix socket.
@@ -5388,7 +5388,7 @@ qemu-kvm -net nic,model=? /dev/null
           attribute all <code>listen</code> elements are ignored.
         </p>
       </dd>
-      <dt><code>none</code> <span class="since">since 1.3.6 (QEMU only)</span></dt>
+      <dt><code>none</code> <span class="since">since 2.0.0 (QEMU only)</span></dt>
       <dd>
         <p>
           This listen type doesn't have any other attribute. Libvirt supports

src/libxl/libxl_driver.c

@@ -5700,7 +5700,7 @@ static virHypervisorDriver libxlHypervisorDriver = {
     .domainMigrateConfirm3Params = libxlDomainMigrateConfirm3Params, /* 1.2.6 */
     .nodeGetSecurityModel = libxlNodeGetSecurityModel, /* 1.2.16 */
     .domainInterfaceAddresses = libxlDomainInterfaceAddresses, /* 1.3.5 */
-    .connectGetDomainCapabilities = libxlConnectGetDomainCapabilities, /* 1.3.6 */
+    .connectGetDomainCapabilities = libxlConnectGetDomainCapabilities, /* 2.0.0 */
 };
 
 static virConnectDriver libxlConnectDriver = {

src/vz/vz_driver.c

@@ -2756,7 +2756,7 @@ static virHypervisorDriver vzHypervisorDriver = {
     .domainIsUpdated = vzDomainIsUpdated,     /* 1.2.21 */
     .domainGetVcpusFlags = vzDomainGetVcpusFlags, /* 1.2.21 */
     .domainGetMaxVcpus = vzDomainGetMaxVcpus, /* 1.2.21 */
-    .domainSetUserPassword = vzDomainSetUserPassword, /* 1.3.6 */
+    .domainSetUserPassword = vzDomainSetUserPassword, /* 2.0.0 */
     .connectDomainEventRegisterAny = vzConnectDomainEventRegisterAny, /* 1.2.10 */
     .connectDomainEventDeregisterAny = vzConnectDomainEventDeregisterAny, /* 1.2.10 */
     .nodeGetCPUMap = vzNodeGetCPUMap, /* 1.2.8 */