that in mysql_rm_table_part2_with_lock() previously we needed to open
same file twice. Now once is enough.


sql/mysql_priv.h:
  Merged functions get_table_type() and mysql_frm_type() into one,
  using the name from latter one.
sql/sql_base.cc:
  Changed get_table_type() to mysql_frm_type()
sql/sql_delete.cc:
  Changed get_table_type() to mysql_frm_type()
sql/sql_rename.cc:
  Changed get_table_type() to mysql_frm_type()
sql/sql_show.cc:
  Changed get_table_type() to mysql_frm_type()
sql/sql_table.cc:
  Changed get_table_type() to mysql_frm_type()
sql/sql_view.cc:
  Merged code from get_table_type() and mysql_frm_type() into the latter one.
sql/sql_view.h:
  Function prototype changes.
sql/table.cc:
  No longer needed.