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/strfunc.h

@@ -0,0 +1,51 @@
+/* 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 STRFUNC_INCLUDED
+#define STRFUNC_INCLUDED
+
+#include "my_global.h"                          /* ulonglong, uint */
+
+typedef struct charset_info_st CHARSET_INFO;
+typedef struct st_mysql_lex_string LEX_STRING;
+typedef struct st_typelib TYPELIB;
+
+ulonglong find_set(TYPELIB *lib, const char *x, uint length, CHARSET_INFO *cs,
+		   char **err_pos, uint *err_len, bool *set_warning);
+ulonglong find_set_from_flags(TYPELIB *lib, uint default_name,
+                              ulonglong cur_set, ulonglong default_set,
+                              const char *str, uint length, CHARSET_INFO *cs,
+                              char **err_pos, uint *err_len, bool *set_warning);
+uint find_type(const TYPELIB *lib, const char *find, uint length,
+               bool part_match);
+uint find_type2(const TYPELIB *lib, const char *find, uint length,
+                CHARSET_INFO *cs);
+void unhex_type2(TYPELIB *lib);
+uint check_word(TYPELIB *lib, const char *val, const char *end,
+		const char **end_of_word);
+int find_string_in_array(LEX_STRING * const haystack, LEX_STRING * const needle,
+                         CHARSET_INFO * const cs);
+char *flagset_to_string(THD *thd, LEX_STRING *result, ulonglong set,
+                        const char *lib[]);
+char *set_to_string(THD *thd, LEX_STRING *result, ulonglong set,
+                    const char *lib[]);
+
+/*
+  These functions were protected by INNODB_COMPATIBILITY_HOOKS
+ */
+uint strconvert(CHARSET_INFO *from_cs, const char *from,
+                CHARSET_INFO *to_cs, char *to, uint to_length, uint *errors);
+
+#endif /* STRFUNC_INCLUDED */