Register Jitsi as default application for sip:, tel:, etc.

resources/install/windows/SCRegistrySpec.wxi

@@ -20,6 +20,27 @@
 
 <Fragment>
 <ComponentGroup Id="ComponentGroup_RegistryEntries">
+  <Component
+      Id="Component_UrlCapabilities"
+      Directory="TARGETDIR"
+      Guid="5798BE9D-AEA5-4DA8-992E-EEAD03D7E4CB">
+    <RegistryKey Key="Jitsi\Capabilities" Root="HKLM">
+      <RegistryValue Name="ApplicationDescription" Type="string" Value="Jitsi, the OpenSource Java VoIP and Instant Messaging client." />
+    </RegistryKey>
+    <RegistryKey Key="Jitsi\Capabilities\UrlAssociations" Root="HKLM">
+      <RegistryValue Name="callto" Type="string" Value="Jitsi.Url" />
+      <RegistryValue Name="sip" Type="string" Value="Jitsi.Url" />
+      <RegistryValue Name="tel" Type="string" Value="Jitsi.Url" />
+      <RegistryValue Name="xmpp" Type="string" Value="Jitsi.Url" />
+    </RegistryKey>
+    <RegistryKey Key="Software\Classes\Jitsi.Url" Root="HKLM">
+      <RegistryValue
+          Key="shell\open\command"
+          KeyPath="yes"
+          Type="string"
+          Value='"[INSTALLDIR]@APP_LAUNCHER_NAME@.exe" "%1"' />
+    </RegistryKey>
+  </Component>
 
   <Component
       Id="Component_SipRegistryEntries"