DERBY-6501; change 10.10 version of CastingTest.java to build/run under jsr169
  implementing a simple 'replace' method for the JSR169 case, and moving the test back to its previous spot in the suite.


git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/branches/10.10@1590782 13f79535-47bb-0310-9956-ffa450edef68