in 5.0-community, but pulling to merge was very hard.


sql/mysql_priv.h:
  Add new extern "C" qualification to set_thd_proc_info().
  
  Fix typo in merge.
sql/mysqld.cc:
  Replace obselete gptr with uchar* .
  
  Add missing #endif from merge problem.
sql/set_var.cc:
  Include new parameter to user variable contruction.
sql/sql_cache.cc:
  Remove duplicate line from merge problem.
sql/sql_profile.cc:
  struct st_table_list is now typedef'd to a new name.
  
  ST_FIELD_INFO now includes a new member, a pointer to an open_table
  function.
sql/sql_profile.h:
  struct st_table_list is now typedef'd to a new name.