AliasHandler:
- finally fix alias deletion when using MariaDB. The workaround is
  to add another field from the subquery to the outer SELECT so that
  MariaDB can't optimize the subquery to "always 1"
  http://sourceforge.net/p/postfixadmin/bugs/325/
  (I'll open a MariaDB bugreport and add the link to the bugtracker)


git-svn-id: svn://svn.code.sf.net/p/postfixadmin/code@1703 a1433add-5e2c-0410-b055-b7f2511e0802
update Smarty to 3.1.21



git-svn-id: svn://svn.code.sf.net/p/postfixadmin/code@1704 a1433add-5e2c-0410-b055-b7f2511e0802