New handler::index_flags() definition to make it easy to check the full used key and a specific key part.

Added key part to optimize_range() to fix problems when using fields in key parts.



sql/examples/ha_archive.h:
  New handler::index_flags() definition
sql/examples/ha_example.h:
  New handler::index_flags() definition
sql/field.cc:
  New optimize_range() definition
sql/field.h:
  New optimize_range() definition
sql/ha_berkeley.cc:
  New handler::index_flags() definition
sql/ha_berkeley.h:
  New handler::index_flags() definition
sql/ha_heap.h:
  New handler::index_flags() definition
sql/ha_innodb.h:
  New handler::index_flags() definition
sql/ha_isam.h:
  New handler::index_flags() definition
sql/ha_isammrg.h:
  New handler::index_flags() definition
sql/ha_myisam.h:
  New handler::index_flags() definition
sql/ha_myisammrg.h:
  New handler::index_flags() definition
sql/ha_ndbcluster.cc:
  New handler::index_flags() definition
sql/ha_ndbcluster.h:
  New handler::index_flags() definition
sql/handler.h:
  New handler::index_flags() definition
sql/log.cc:
  Fixed compiler warnings
sql/log_event.cc:
  Fixed compiler warnings (and renamed short variable name)
sql/opt_range.cc:
  New handler::index_flags() definition
sql/opt_sum.cc:
  New handler::index_flags() definition
sql/set_var.cc:
  Removed compiler warnings
sql/sql_db.cc:
  Removed compiler warnings
sql/sql_select.cc:
  New handler::index_flags() definition
sql/sql_show.cc:
  Removed compiler warnings
sql/sql_update.cc:
  Removed compiler warnings
sql/table.cc:
  New handler::index_flags() definition

sql/examples/ha_archive.h

@@ -72,7 +72,7 @@ public:
     return (HA_REC_NOT_IN_SEQ | HA_NOT_EXACT_COUNT | HA_NO_AUTO_INCREMENT |
             HA_FILE_BASED);
   }
-  ulong index_flags(uint idx, uint part) const
+  ulong index_flags(uint idx, uint part, bool all_parts) const
   {
     return 0;
   }