I had intended for this to be a full vertical slice initially, but AIR's
parser is going to need enough work that it'll muddy this patch a bit too
much.
This keeps the desugaring simple, which is what I was hoping for.
The next step is to load it into the graph and emit regenerated longhand
sources.
I also don't like how the namespace prefix is just being ignored for
shorthand param desugaring. This is also the case in the XSLT-based
compiler, but this violates TAMER's principle that it should parse every bit
of information; nothing should be ignored. If something does not contribute
useful information, then it is not a useful construct and ought to be
rejected.
DEV-13708
Mike Gerwitz
91b787d367