This patch adds handlerton passing to functions. NDB and Innodb still require a global hanlderton in the main code due to the nature of the sql_cache call back function (should be solveable... another patch).
Partitioning now has a flag to allow disabling of engines from being compatible with partitioning. Cleaned up heap naming convention on panic call. 


include/heap.h:
  Added new function
sql/ha_ndbcluster.cc:
  Updated hanlderton functions
sql/ha_ndbcluster_binlog.cc:
  Updated handlerton functions.
sql/handler.cc:
  Updated handlerton functions.
sql/handler.h:
  Updated hanlderton functions
sql/log.cc:
  Updated handlerton functions
sql/mysql_priv.h:
  Updated handlerton functions
sql/mysqld.cc:
  Added Legacy handlerton functions
sql/partition_info.cc:
  Added flag support for marking engines not compatible with partitioning
sql/sql_cursor.cc:
  Updated hanlderton functions
sql/sql_show.cc:
  Updated hanlderton functions
sql/sql_tablespace.cc:
  Update for handlerton functions
storage/archive/ha_archive.cc:
  Update for hanlderton functions
storage/archive/ha_archive.h:
  Update for handlerton functions
storage/blackhole/ha_blackhole.cc:
  Update for handlerton functions
storage/csv/ha_tina.cc:
  Update for handlerton functions
storage/csv/ha_tina.h:
  Update for handlerton functions
storage/federated/ha_federated.cc:
  Updated for handlerton functions
storage/federated/ha_federated.h:
  Updated for handlerton functions
storage/heap/ha_heap.cc:
  Update for handlerton functions
storage/heap/hp_panic.c:
  Update of function name
storage/heap/hp_test1.c:
  Update of function name
storage/heap/hp_test2.c:
  Update of function name.
storage/innobase/handler/ha_innodb.cc:
  Update of function name
storage/innobase/handler/ha_innodb.h:
  Update of function name
storage/myisam/ha_myisam.cc:
  Update of function name.
storage/myisammrg/ha_myisammrg.cc:
  Update of function name