Two little extensions to the ROOT classes dealing with SQL and more
precisely ORACLE Statement and Server :
  - added possibility to connect to ORACLE in object mode, by adding to
    the connection URL an argument like "?ObjectMode=yes"
  - added vector interfaces for numeric data in the sqlStatement class
    and its implementation in ORACLE


git-svn-id: http://root.cern.ch/svn/root/trunk@27990 27541ba8-7e3a-0410-8455-c3a389f83636