Make the encryption functions MD5(), SHA1() and ENCRYPT() return binary results.
    
Make MAKE_SET() and EXPORT_SET() use the correct character set for their default separator strings.


mysql-test/r/ctype_ucs.result:
  Add tests for bug #20536.
mysql-test/t/ctype_ucs.test:
  Add tests for bug #20536.
  
  Tests showing correct behavior for MD5(), SHA1(), MAKE_SET() and EXPORT_SET().
  
  Also, tests showing incorrect behavior, which will remain "Won't fix", for
  PASSWORD(), OLD_PASSWORD(), ENCRYPT() and QUOTE().
sql/item_strfunc.cc:
  Make the encryption functions MD5(), SHA1() and ENCRYPT() return binary results.
  
  Make MAKE_SET() and EXPORT_SET() use the correct character set for their default separator strings.
sql/item_strfunc.h:
  Make the encryption functions MD5(), SHA1() and ENCRYPT() return binary results.