Refactored a number of engines to have correct init/deinit. Added pass support for "data" from plugin to plugin generic init to use memory location.

plugin/daemon_example/plug.in:
  Switched the plug.in type (corrected)
sql/handler.h:
  Added data pointer to use for engines.
sql/sql_plugin.cc:
  Passing plugin to generic handlers to allow them to add data to "data"
storage/archive/ha_archive.cc:
  Refactored. Now uses less logic for startup/shutdown.
storage/csv/ha_tina.cc:
  Refactored init/deinit to use less code.
storage/example/ha_example.cc:
  Refactored example to show correct behavior for init/deinit.
storage/example/ha_example.h:
  Removed unneeded references to methods that do not need to be implemened.
storage/federated/ha_federated.cc:
  Refactored to use less code and startup/shutdown correctly.

1 files changed, 1 insertions, 0 deletions

diff --git a/sql/handler.h b/sql/handler.h
index 888f837d427..f27912f4d1e 100644
--- a/sql/handler.h
+++ b/sql/handler.h
@@ -684,6 +684,7 @@ struct handlerton
    int (*table_exists_in_engine)(handlerton *hton, THD* thd, const char *db,
                                  const char *name);
    uint32 license; /* Flag for Engine License */
+   void *data; /* Location for engines to keep personal structures */
 };