Bug #2855 ResultSetMetaData.getColumnClassName() return wrong type for FLOAT

Description:
To be consistent with ResultSet.getColumnClassName() in the case of a FLOAT, 
ResultSetMetaData.getObject() 
should return "java.lang.Double" not "java.lang.Float"

The behavior of ResultSet.getColumnClassName() is appropriate per Table 9.3 at http://java.sun.com/
j2se/1.4.2/docs/guide/jdbc/getstart/mapping.html

How to repeat:
Invoke ResultSetMetaData.getColumnClassName() on a FLOAT

Suggested fix:
    public String getColumnClassName(int column) throws SQLException {

...

        case Types.REAL:
        case Types.FLOAT:
            return "java.lang.Float";

        case Types.DOUBLE:
            return "java.lang.Double";

should become:

        case Types.REAL:
            return "java.lang.Float";

        case Types.FLOAT:
       case Types.DOUBLE:
            return "java.lang.Double";

...

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