* Patch from Sergei Gorelkin:
- Full support for XML 1.1
- Support for ISO-8859-1 input encoding (started support for any
encoding, but went a bit wrong way. I should stick to using iconv,
but for it I need second level of buffering, otherwise it's too
slow).
- Input buffering (can now read from non-seekable streams and
TextFile's)
- External entity loading, processing of default attributes and other
stuff needed to comply with "non-validating parser" specification.

git-svn-id: trunk@5018 -