Add support for recursive relationships.

[allynt]

WHO: @allynt

CIM2 has recursive relationships... for example a SoftwareComponent has a property called Sub_Components which is itself of type SoftwareComponent. Since I pre-create all necessary customizations and models, this structure puts me in an infinite loop...

[allynt]

I have modified the esdoc-mp code to tag recursive relationships. I do it there rather than as part of the Q code b/c it is a pretty inefficient process and the esdoc-mp code does not need to be executed at run-time.