WL#2225 Extend the test cases for PS + develop a basic test routine for PS
   The basic test routine 
       mysql-test/include/patchwork-check.inc
   Test cases for the the basic test routine 
       mysql-test/t/tool_test.test    
       mysql-test/r/tool_test.result

   Test cases for prepared statements with functions
       mysql-test/t/ps_12func.test
       mysql-test/r/ps_12func.result
   Some statements are set to comment, because of open bugs.

Fresh MySQL V4.1 and V5.0 souces produce in the moment (~11-Nov-2004) the
same result files.