embedded-related changes


include/mysql_com.h:
  net_flush emptification
libmysqld/lib_sql.cc:
  Some Protocol:: methods implemented
sql/convert.cc:
  changes to use convert in embedded library
sql/field.cc:
  set_key_image changed
sql/item.cc:
  obsolete functions removed
sql/item.h:
  embedded-related changes in Protocol class
sql/log.cc:
  there's no ports in embedded library
sql/mysqld.cc:
  some debug stuff
sql/protocol.cc:
  embedded-related changes
sql/protocol.h:
  embedded-related changes
sql/sql_cache.cc:
  comment added
sql/sql_class.cc:
  no need to do special embedded select_send::send_row
sql/sql_class.h:
  embedded-related changes
sql/sql_parse.cc:
  comments added debugging stuff deleted
sql/sql_show.cc:
  non-protocol sending removed