WL#5030: Split and remove mysql_priv.h

This patch:

- Moves all definitions from the mysql_priv.h file into
  header files for the component where the variable is
  defined
- Creates header files if the component lacks one
- Eliminates all include directives from mysql_priv.h
- Eliminates all circular include cycles
- Rename time.cc to sql_time.cc
- Rename mysql_priv.h to sql_priv.h

sql/sql_rename.h

@@ -0,0 +1,27 @@
+/* Copyright 2006-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
+
+#ifndef SQL_RENAME_INCLUDED
+#define SQL_RENAME_INCLUDED
+
+class THD;
+struct TABLE_LIST;
+
+bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent);
+bool do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db,
+               char *new_table_name, char *new_table_alias,
+               bool skip_error);
+
+#endif /* SQL_RENAME_INCLUDED */