doc: reflect certain Corrade libraries and plugins being deprecated.

doc/custom-buildsystems-order.dot

@@ -32,7 +32,7 @@ digraph "Magnum library dependency order" {
     CorradeUtility [style=solid label="Corrade\nUtility" class="m-primary"]
     CorradeContainers [style=solid label="Corrade\nContainers" class="m-primary" style=dotted]
     CorradePluginManager [style=solid label="Corrade\nPluginManager" class="m-info"]
-    CorradeInterconnect [style=solid label="Corrade\nInterconnect" class="m-info"]
+    CorradeInterconnect [style=solid label="Corrade\nInterconnect" class="m-dim"]
     CorradeTestSuite [style=solid label="Corrade\nTestSuite" class="m-info"]
 
     Magnum [class="m-primary"]
@@ -60,7 +60,7 @@ digraph "Magnum library dependency order" {
     CorradeUtility -> CorradeContainers [dir=both style=dashed class="m-primary"]
     {rank=same CorradeUtility CorradeContainers}
     CorradePluginManager -> CorradeUtility [class="m-info"]
-    CorradeInterconnect -> CorradeUtility [class="m-info"]
+    CorradeInterconnect -> CorradeUtility [class="m-dim"]
     CorradeTestSuite -> CorradeUtility [class="m-info"]
 
     {rank=same Magnum -> MagnumAnimation -> MagnumMath [dir=both style=dashed]}

doc/file-formats.dox

@@ -532,7 +532,7 @@ Together with @ref file-formats-image-importers "image importers" derived from
 <tr>
 <th rowspan="2">Open Game Engine Exchange<br/>(`*.ogex`)</th>
 <td rowspan="2">`OpenGexImporter`</td>
-<td>@ref Trade::OpenGexImporter "OpenGexImporter"</td>
+<td>@ref Trade::OpenGexImporter "OpenGexImporter" @m_class{m-label m-danger} **deprecated**</td>
 <td class="m-text-center m-warning">@ref Trade-OpenGexImporter-behavior "some"</td>
 <td class="m-text-center">@m_span{m-text m-dim} none @m_endspan </td>
 <td class="m-text-center"></td>