One consequence of using an incomplete struct to define XML_Parser is that compilers can be more picky about type compatibility.  Tighten up the function signatures to reduce spurious warnings.
One consequence of using an incomplete struct to define XML_Parser is
that compilers can be more picky about type compatibility.  Tighten up
the function signatures to reduce spurious warnings.

cgwalters/expat-git-mirror,cgwalters/expat-git-mirror,cgwalters/expat-git-mirror