Improved Generic and Python backends

I modified genericBackend.fs to give visibility to the generic and python backends to the data type of the variables that can be declared in the ASN.1 model.
Up to now when you had this in the ASN.1 model:
hello INTEGER ::= 1
There was only a reference to the name "hello"  in the STG backends, but no reference to the type. I added a "Vas" (variable assignment) construct and filled it with the type details.

I also updated the tool version number but it was referring to a SVN commit - I just increased the value.