Mutiple updates from SciTech for wxWindows including the following:

1. Updates to HTML applet classes in client side include syntax
2. Updates to wxUniversal for OS/2
3. Updates for better palette management on Windows
4. Misc other fixes and changes to fix build system for Watcom 11.0


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12045 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/dialog.cpp

@@ -157,7 +157,7 @@ wxDialog::~wxDialog()
     m_isBeingDeleted = TRUE;
     wxTopLevelWindows.DeleteObject(this);
     Show(FALSE);
-    if (!IsModal)
+    if (!IsModal())
         wxModelessWindows.DeleteObject(this);
 
     //