client/mysqldump.c:
  table type compare is changed to case insensitive
mysql-test/r/information_schema.result:
  test result
mysql-test/r/information_schema_db.result:
  result fix
mysql-test/suite/ndb/r/ndb_alter_table.result:
  result fix
mysql-test/suite/ndb/r/ndb_temporary.result:
  result fix
mysql-test/t/information_schema.test:
  test case
sql/ha_ndbcluster.cc:
  char* variables are changed to LEX_STRING
sql/ha_ndbcluster.h:
  char* variables are changed to LEX_STRING
sql/ha_ndbcluster_binlog.cc:
  char* variables are changed to LEX_STRING
sql/handler.cc:
  char* variables are changed to LEX_STRING
sql/handler.h:
  char* variables are changed to LEX_STRING
sql/sql_base.cc:
  Modified functions which are used during open table process
  according to table opening method and requested_object.
sql/sql_select.cc:
  Add support for I_S tables into select_describe() function
sql/sql_show.cc:
  1. Added initialization of 'open_method' to 'st_field_info' structs.
  2. Added initialization of 'i_s_requested_object' to 'ST_SCHEMA_TABLE' structs.
  3. New function which calculates database name and table name values 
     from 'where' condition if it's possible
     void get_lookup_field_values(THD *thd, COND *cond, TABLE_LIST *table,
                                  LOOKUP_FIELD_VALUES *lookup_field_vals);
  4. New function which set table open method
     setup_table_open_method(TABLE_LIST *tables,
                             ST_SCHEMA_TABLE *schema_table,
                             enum enum_schema_tables schema_table_idx)
  5. New function
     int make_db_list(THD *thd, List<LEX_STRING> *files,
                      LOOKUP_FIELD_VALUES *lookup_field_vals,
                      bool *with_i_schema)
  6. New function
     int make_table_name_list(THD *thd, List<LEX_STRING> *files, LEX *lex,
                              LOOKUP_FIELD_VALUES *lookup_field_vals,
                              bool with_i_schema, LEX_STRING *db_name)
  7. Modified 'get_all_tables' function according to new schema(see wl#3732).
sql/sql_show.h:
  char* variables are changed to LEX_STRING
sql/table.cc:
  Modified functions which are used during open table process
  according to table opening method and requested_object.
sql/table.h:
  1. added new constants(open_method)
  #define SKIP_OPEN_TABLE 0
  #define OPEN_FRM_ONLY   1
  #define OPEN_FULL_TABLE 2
      
  2. Added new field 'open_method' into struct st_field_info;
     uint open_method;
      
  3. Added new field into ST_SCHEMA_TABLE struct
     uint i_s_requested_object;  /* the object we need to open(TABLE | VIEW) */.
  4. Added new field to TABLE_LIST struct.
     uint i_s_requested_object;
     This field is set from ST_SCHEMA_TABLE.i_s_requested_object
     for processed table before opening.
      
  5. Added new fields to TABLE_LIST struct, used for 'explain select' for I_S table
     bool has_db_lookup_value;
     bool has_table_lookup_value;
     uint table_open_method;
sql/unireg.h:
  added new constants