fixed wxUSE_TABDIALOG/TAB_DIALOG confusion and other fixes to prevent wxTabCtrl from being built into the library unnecessarily (patch 1416049)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37400 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/tabctrl.cpp

@@ -12,6 +12,8 @@
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
+#if wxUSE_TAB_DIALOG
+
 #ifndef WX_PRECOMP
 #include "wx/wx.h"
 #endif
@@ -354,3 +356,5 @@ wxTabEvent::wxTabEvent(wxEventType commandType, int id)
            :wxCommandEvent(commandType, id)
 {
 }
+
+#endif // wxUSE_TAB_DIALOG