I forgot the following information:

   *   In the link line of tdbcodbc.dll, there is tcl86stubs.lib *and* tcl86t.lib. IMHO, the last one should be removed. But apparently, it does not harm, if there are no references (like in the link of tdbc.dll)
   *   The client module tdbc::sqlite3 is not affected as it does not link with tdbcstubs.lib.
   *   The client modules for postgres ad mysql should also be affected, as they also link with tdbcstubs.lib.