Template: remove the following parameters from the t()-method: $fallbacktag, $fallbackdefault, $striptags

Backwards compatibility with the previous style is preserved, but will write a
warning to the log.

Uses of $fallbacktag should be replaced with calls to the getTag()-method.
The $fallbackdefault and $striptags parameters didn't have any in-tree users.


git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@748 44740490-163a-0410-bde0-09ae8108e29a