docs,api: provide per-version indices

docs/reference/api/ModemManager-docs.xml

@@ -106,9 +106,40 @@
     <title>Index</title>
   </index>
 
-  <!-- NOT needed in DBus API -->
-  <!--chapter id="mm-hierarchy">
-    <title>Object Hierarchy</title>
-      <xi:include href="xml/tree_index.sgml"/>
-  </chapter-->
+  <index id="api-index-full">
+    <title>API Index</title>
+    <xi:include href="xml/api-index-full.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="deprecated-api-index" role="deprecated">
+    <title>Index of deprecated API</title>
+    <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-0" role="1.0">
+    <title>Index of new core symbols in 1.0</title>
+    <xi:include href="xml/api-index-1.0.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-2" role="1.2">
+    <title>Index of new core symbols in 1.2</title>
+    <xi:include href="xml/api-index-1.2.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-4" role="1.4">
+    <title>Index of new core symbols in 1.4</title>
+    <xi:include href="xml/api-index-1.4.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-6" role="1.6">
+    <title>Index of new core symbols in 1.6</title>
+    <xi:include href="xml/api-index-1.6.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-8" role="1.8">
+    <title>Index of new core symbols in 1.8</title>
+    <xi:include href="xml/api-index-1.8.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-10" role="1.10">
+    <title>Index of new core symbols in 1.10</title>
+    <xi:include href="xml/api-index-1.10.xml"><xi:fallback /></xi:include>
+  </index>
+  <index id="api-index-1-12" role="1.12">
+    <title>Index of new core symbols in 1.12</title>
+    <xi:include href="xml/api-index-1.12.xml"><xi:fallback /></xi:include>
+  </index>
 </book>