(Warning C4090 is incorrectly issued when using Visual C++ .NET 2003,
bug 101661, http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=101661)

dict_table_find_equivalent_index(): Cast away constness in the mem_free()
call.  MSVC seems to think that an array of pointers to const data is
const itself.

UT_SORT_FUNCTION_BODY(): Cast away constness in the memcpy() call.
MSVC seems to think that an array of pointers to const data is const itself.