Avoid compilation error in dbgutil (_DEBUG) MSVC build

Define _HAS_ITERATOR_DEBUGGING as 0 so that we don't use the debugging
ordering predicates, which cause compilation errors thanks to the way
we use std::equal_range(). In this case it seemed fairly hairy to fix
that, so...

fpicker/source/office/OfficeControlAccess.cxx

@@ -26,6 +26,8 @@
  *
  ************************************************************************/
 
+#define _HAS_ITERATOR_DEBUGGING 0
+
 // MARKER(update_precomp.py): autogen include statement, do not remove
 #include "precompiled_fpicker.hxx"