OARIS2 — UNKNOWN enumeration literal appears twice

I used RTI's DDS tool to transform the OARIS 2.0 beta 1 IDL into C++ and Java and tried to compile it. I got errors involving the enumeration types identity_type in Common_Types.idl and health_state_type in Subsystem_Control.idl. Both have an enumeration literal named UNKNOWN. The generated C++ and Java have these in the same namespace so the code does not compile.

The full error when compiling C++ is below
./Subsystem_Control.h:436:5: error: redeclaration of 'UNKNOWN'
UNKNOWN
^
In file included from ./Subsystem_Control.h:23:0,
from ./Control_Battle_Override.h:24,
from ./Control_Battle_Override.cxx:31:
./Common_Types.h:133:5: note: previous declaration 'org_omg_c4i_Domain_Model_Common_Types_identity_type UNKNOWN'

I'm using rtiddsgen version 5.3.1.14 to transform IDL into C++ and Java. I don't know if this is a problem with the specification or if I need to find a way to transform the IDL into C++ and Java that uses separate namespaces for enumeration types. But I felt someone should know about this anyway.

This was the only issue preventing compilation of the generated C++ and Java. I changed one of the literals to something else and it transformed and built with no errors.

Change health UNKNOWN enum to UNKNOWN_HEALTH

Change to disambiguate the Health enumerate as this does not impact known implementations of the standard. And the values of the Identity enumerate reflect standard usage for identification.