ok, you have all been saved from a flood of commits because of the missing commitmails ;-)
The old "template engine' as we knew it up to 7.50 is gone by now.
in the some rare situations where there realy has to be an anonymous string in some kind to be transported, this is done via the array which usually is done from the query params, the bstr array.
Since its a communication between webcit and its template, it mustn't be interferable from post, or get parameters; for that reason these are prepended by '__' and no more Post/Get params starting with __ are accepted.
We have won a big advantage by this commit: if a token isn't present when parsing the templates, its not there, so its an error. Previously it could have been added at runtime via SVPUT and friends.
if one has a look at the last commit, there were about a hand full of bugs hidden by that, which i've fixed also.
