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Created by: ibaned

While working on #1371 (closed), I'm having a tough time using Teuchos::any because:

1. To support its non-standard operator==, it requires the held type to always have an operator==
2. To support its non-standard print functionality, it requires the held type to always work with operator<< into a stream

This really limits what can be put into Teuchos::any, and I'd like to use it in the TeuchosParser interface in a way that users can put literally any type they want into it, but thats going to be a tough sell if they need to define operator== and operator<< for all such types.

This applies to non-user types too, I'm looking at having to define operator<< for std::set<char>....

I'd really like to cut back on these requirements, but they seem to be used in Teuchos::ParameterList to implement its own operator== and operator<<....

@bartlettroscoe