added the mention of library in which each class is defined to the documentation (patch 1756715)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@47777 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/latex/wx/menu.tex

@@ -61,6 +61,10 @@ that normally all menus used are deleted automatically.
 
 <wx/menu.h>
 
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
 \wxheading{Event handling}
 
 If the menu is part of a menubar, then \helpref{wxMenuBar}{wxmenubar} event processing is used.
@@ -717,6 +721,10 @@ A menu bar is a series of menus accessible from the top of a frame.
 
 <wx/menu.h>
 
+\wxheading{Library}
+
+\helpref{wxCore}{librarieslist}
+
 \wxheading{Event handling}
 
 To respond to a menu selection, provide a handler for EVT\_MENU, in the frame