Added 'Include files' section to class references

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1698 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/variant.tex

@@ -25,6 +25,10 @@ wxPropertyValue may be replaced by wxVariant eventually.
 
 \helpref{wxObject}{wxobject}
 
+\wxheading{Include files}
+
+<wx/variant.h>
+
 \wxheading{See also}
 
 \helpref{wxVariantData}{wxvariantdata}
@@ -386,6 +390,10 @@ and override the pure virtual functions.
 
 \helpref{wxObject}{wxobject}
 
+\wxheading{Include files}
+
+<wx/variant.h>
+
 \wxheading{See also}
 
 \helpref{wxVariant}{wxvariant}