This adds parser support and most of the machinery for
auto x = 10, y = 20;
However, the above still goes wrong somewhere in typestate, causing
the state checker to believe only the last variable in the list is
initialized after the statement.
Tim, if you have a moment, could you go over the changes to the tstate
code in this patch and see where I'm going wrong?
Multi-var-decls without the typestate extension
Add a loop
Probably more should be moved or split off into other files. My algorithm
was something along the lines of: move the contexts and their transitive
dependencies along with some functions to work with them. I stopped when
I was going to have to start pulling glue generation, which really
should go into a trans_glue file.
