A pattern to generate binlog for DROPped temp table in close_temporary_tables
  was buggy: could not deal with a grave-accent-in-name table.

  The fix exploits `append_identifier()' for quoting and duplicating accents.


mysql-test/r/rpl_temporary.result:
  results changed
mysql-test/t/rpl_temporary.test:
  more correct internal table emulation; typo of @@session in bug#17263.
sql/mysql_priv.h:
  bool is_user_table(TABLE * table) 
  is added to answer wheather temporary table was created explicitly.
sql/sql_base.cc:
  Utilizing `append_identifier' to quote. `close_temporary_tables' once again recoded
  I hope to become much simplier than previously. No-binlog branch is separated completely the
  rest that adopts String's methods.