We have a dependency in the build for oracle because of
the JDBCSecurityPlugIn using oracle specific classes.
We should enchance ant so that
a) It can exclude compiling this class if no oracle JAR
b) Have a property in the build for Oracle so if not set it
will exclude any files that have an oracle dependency.
By default released build will have a compiled version of
the oracle class.
Need to update the documentation to explain how to do
a build with/without oracle.