Summary
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Change the string output for annotations so that enum constants have their `name` method rather than their `toString` method called. Also, switch from using binary names to canonical names for class and interface names.

Problem
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Using an enum constant's `toString` output isn't necessary the source-usable textual representation of the constant. For class and interface names, canonical names rather than binary names are used in source.

Solution
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Change the implementation as summarized above. This also matches 'javac`'s behavior in the analagous cases.

Specification
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No specification changes; the exact textual output is *not* specified, by design.