[saga-rg] enums name space...

[Andre Merzky]

Hi, 

for some packages in the strawman, enums are defined
directly in the saga name space.  I propose to move them
into the class definitions, to avoid confusion from too many
enums in the same name space.

As an example, we have: 
  state (task), stream_state, job_state.  

I thinbk it would be better to have 
  task::state, stream::state, job::state.

Any comments?

Cheers, Andre.

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