Lots more memory/resource leak fixes. There are still more, but this solves about 75% of them.

These fixes also speed up tex2rtf greatly.  I can now build all the RTF version of the wxWindows manual in under 30 seconds, when before it took around 90 seconds.
Curley Brace matching is turned back on again.  I cannot find any places where it does not work.  If you find one, let me know


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8773 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/tex2rtf/src/texutils.cpp

@@ -432,7 +432,14 @@ void ReadTexReferences(char *filename)
         istr.get(ch);
       }
       section[i] = 0;
+
+      // gt - needed to trick the hash table "TexReferences" into deleting the key 
+      // strings it creates in the Put() function, but not the item that is
+      // created here, as that is destroyed elsewhere.  Without doing this, there
+      // were massive memory leaks
+      TexReferences.DeleteContents(TRUE);
       TexReferences.Put(label, new TexRef(label, file, section, sectionName));
+      TexReferences.DeleteContents(FALSE);
     }
   }
 }