pre-req on JDK6 by classpath 0.97?

Looks like upgrading to classpath 0.97 might pre-reqs Java6. Building with the same recent IBM 5.0 SDK I use to build 0.96, I see some new errors:

[exec] ../javax/management/openmbean/OpenMBeanParameterInfoSupport.java:209: inconvertible types
[exec] found : javax.management.openmbean.OpenType<T>
[exec] required: javax.management.openmbean.TabularType
[exec] type instanceof TabularType))
[exec] ^
[exec] ../javax/management/openmbean/OpenMBeanParameterInfoSupport.java:273: inconvertible types
[exec] found : javax.management.openmbean.OpenType<T>
[exec] required: javax.management.openmbean.TabularType
[exec] type instanceof TabularType))
[exec] ^
[exec] ../javax/management/openmbean/OpenMBeanParameterInfoSupport.java:277: inconvertible types
[exec] found : javax.management.openmbean.OpenType<T>
[exec] required: javax.management.openmbean.TabularType
[exec] type instanceof TabularType))
[exec] ^
[exec] ../javax/management/openmbean/OpenMBeanAttributeInfoSupport.java:224: inconvertible types
[exec] found : javax.management.openmbean.OpenType<T>
[exec] required: javax.management.openmbean.TabularType
[exec] type instanceof TabularType))
[exec] ^
[exec] ../javax/management/openmbean/OpenMBeanAttributeInfoSupport.java:294: inconvertible types
[exec] found : javax.management.openmbean.OpenType<T>
[exec] required: javax.management.openmbean.TabularType
[exec] type instanceof TabularType))
[exec] ^
[exec] ../javax/management/openmbean/OpenMBeanAttributeInfoSupport.java:298: inconvertible types
[exec] found : javax.management.openmbean.OpenType<T>
[exec] required: javax.management.openmbean.TabularType
[exec] type instanceof TabularType))
[exec] ^
[exec] ../javax/management/openmbean/ArrayType.java:317: inconvertible types
[exec] found : javax.management.openmbean.OpenType<capture of ?>
[exec] required: javax.management.openmbean.CompositeType
[exec] elementType instanceof CompositeType ||
[exec] ^
[exec] ../javax/management/openmbean/ArrayType.java:318: inconvertible types
[exec] found : javax.management.openmbean.OpenType<capture of ?>
[exec] required: javax.management.openmbean.TabularType
[exec] elementType instanceof TabularType ||
[exec] ^
[exec] ../external/sax/org/xml/sax/helpers/NewInstance.java:63: warning: non-varargs call of varargs method with inexact argument type for last parameter;
[exec] cast to java.lang.Class<?> for a varargs call
[exec] cast to java.lang.Class<?>[] for a non-varargs call and to suppress this warning
[exec] m = Thread.class.getMethod("getContextClassLoader", null);
[exec] ^
[exec] ../external/sax/org/xml/sax/helpers/NewInstance.java:70: warning: non-varargs call of varargs method with inexact argument type for last parameter;
[exec] cast to java.lang.Object for a varargs call
[exec] cast to java.lang.Object[] for a non-varargs call and to suppress this warning
[exec] return (ClassLoader) m.invoke(Thread.currentThread(), null);
[exec] ^
[exec] Note: * uses or overrides a deprecated API.
[exec] Note: Recompile with -Xlint:deprecation for details.
[exec] Note: Some input files use unchecked or unsafe operations.
[exec] Note: Recompile with -Xlint:unchecked for details.
[exec] 8 errors

If we are going to change the required host JVM level, then all documentation needs to be updated.