added missing Dependencies.txt

JAR files required for the OpenCADC cadcUtil project

====================================================

Name in build.xml      Versioned Name          Project URL

-----------------      --------------------    -----------

log4j.jar              log4j-1.2.15            http://logging.apache.org

bcprov.jar             bouncycastle-1.46-11    http://www.bouncycastle.org/

cadcUtil.jar                                   http://code.google.com/p/opencadc                      

cadcRegistryclient.jar                         http://code.google.com/p/opencadc