review experimental classes [LUCENE-4325]

[asfimport]

This can frighten people away from APIs (maybe as much as @deprecated).

We should be careful what we tag as experimental: things like Collector which have been around for an aweful long time imo should not be, its ok if they are expertish, if we need to make a change we take that on a case by case basis.

We also don't need this tag on pkg-private things.

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Migrated from LUCENE-4325 by Robert Muir (@rmuir)
Attachments: LUCENE-4325_start.patch

[asfimport]

Robert Muir (@rmuir) (migrated from JIRA)

Start to a patch, i went thru analyzers and core.