undisable many warnings for VC++ in defs.h and fixed several thousands of them in the sources

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22222 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/html/m_dflist.cpp

@@ -36,6 +36,8 @@ FORCE_LINK_ME(m_dflist)
 
 TAG_HANDLER_BEGIN(DEFLIST, "DL,DT,DD" )
 
+    TAG_HANDLER_CONSTR(DEFLIST) { }
+
     TAG_HANDLER_PROC(tag)
     {
         wxHtmlContainerCell *c;