UIXComponent does not check if in context when setupChildrenContext is called
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                 Key: TRINIDAD-2203
                 URL: https://issues.apache.org/jira/browse/TRINIDAD-2203
             Project: MyFaces Trinidad
          Issue Type: Improvement
          Components: Components
    Affects Versions: 2.0.2-core
            Reporter: Andrew Robinson
            Assignee: Andrew Robinson


UIXComponent has methods:
setupVisitingContext
setupChildrenEncodingContext
setupEncodingContext
setupChildrenVisitingContext

and the corresponding tear down methods. The problem is that there is no code 
that validates that these methods have not been called more than once at a 
time. For example, if a component overrides the setupChildrenEncodingContext 
with code, and that method is called more than once, it may cause issues. By 
adding boolean flags and simple checks with warnings to the LOG it would be 
much easier for component authors to determine where the issue is instead of 
just allowing, silently, the excessive calls to be made.

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